Sync flag icons with upstream

* Includes all 268 flags.
* Upstream commit `a7b7c3c55560cb39d96e70324876e1bb5b1c625b` - (Release v6.11.0)
* Flags source from (zip): https://github.com/lipis/flag-icons/releases/tag/v6.11.0

PR #19518.

src/icons/flags/ht.svg

@@ -5,7 +5,7 @@
     <path fill="#fff" stroke="none" d="M244.3 179.7h151.4v120.5H244.3z"/>
     <path fill="#016a16" stroke="#016a16" stroke-width=".3" d="m350.5 266.8-31 1-30.7.3s-15.8 5.8-22.3 7.1c-6.4 1.3-5.6 3.4-10.5 4.6-4 .9-4.5 1.1-6.8 1.3-1.5 0-3.2 1.2-5 2.4v16.7h151.5v-15.9c-1.6-.9-3.2-1.5-4.8-2-2.2-.8-3.7-1.6-7.7-2.5-5-1.1-4.2-3.3-10.6-4.6-6.5-1.3-22.1-8.4-22.1-8.4z"/>
     <g transform="translate(-80) scale(1.6)">
-      <g id="a">
+      <g id="ht-a">
         <path d="M244.5 143.5h1.4l2.6 10.7-.6 3.4-3.4-14z"/>
         <path fill="#fff" d="m243 136.3 1 8.3h1l-2-8.2z"/>
         <path d="m245.7 154.6-4.3-11.5 1.6-.1 5 14-2.3-2.4z"/>
@@ -31,11 +31,11 @@
         <path fill="#0a328c" stroke="#0a328c" d="m214.1 155.2.6 1.2 3-4.6 2.5-.9.5-1c-2-1.8-3.5 1.4-3.5 1.4l-3.1 3.9z"/>
         <path fill="#d20014" stroke="#d20014" d="M216.8 156.8c-.2-1 .5-4.2.7-4.3 1.5.5 2.8.6 3.2-2.6-1 1.5-3.3 1-3.3 1l-.7 1 .1.4-2 4 2 .5z"/>
       </g>
-      <use xlink:href="#a" width="100%" height="100%" transform="matrix(-1 0 0 1 499.9 0)"/>
+      <use xlink:href="#ht-a" width="100%" height="100%" transform="matrix(-1 0 0 1 499.9 0)"/>
     </g>
     <g transform="translate(-80) scale(1.6)">
       <path fill="#016a16" stroke="#016a16" d="m248.8 125.6-.5 9h2.9l-.4-9 3-.3-.3-3.6-7.5.3v3.2l2.8.4z"/>
-      <g id="b" fill="#016a16">
+      <g id="ht-b" fill="#016a16">
         <path d="M249.8 121.9c-7.8-7.8-13.9-4-15.3-2.9 1 .2 1.8-.4 2.3-.5l-1 1.2s2.5-1 2.8-1c-.4.3-.8 1-.8 1 .2 0 1.6-1.1 1.8-1.1-.4.4-.5 1.5-.5 1.5l1.2-.5c.3.2-.1.6.1.6 2-.2 4.7 1.7 5 2.3"/>
         <path d="M247.9 123.3c-.8-1.8-15.6-5-18.6.3 1.2.3 2.3-1 2.3-1v1.2l1.9-1.6-.7 1.6 1.5-1.3v1.3l2-2-.3 1.1 1.7-.7-.2 1"/>
         <path d="M247.2 123.6c-3.8-2.5-9.6-.8-9.6-.8-3.8 2-5.8 1.7-6.2 5.6.3-.1 1.3-1.4 1.3-1.4l.8 1.5.2-2.1.6 1.7 1-2.8.2 1.9 1.4-1.9.6.6.6-1.5.6 1s1-.6 1.5-.3l1-1.2.3.9 1-1 .3.7.9-.8v.6h3"/>
@@ -43,7 +43,7 @@
         <path d="M246.9 124.7c-3.5 1.3-6.7 6.2-6.4 8.2 1.5-2 1.2-1.7 1.9.6 0 0 .2-2 .5-2.2l.5 1.4.1-1.9h.5l-.1-1.1.7.5c-.2-.7-.3-.9.4-1.5 0 0-1 .1-.2-1.5l.7.6s-.2-.7 0-1l2.6-.8"/>
         <path d="m247.2 125-1.3 2.6.7.2-1.6 1.1 1.3-.1s-2 .7-2.2 2.7l2-1s-1.7 1.8-2 2.9l1.3-1s-1.2 1.2-1 3l.9-1c-.2 2.3-.2 2.5.8 4.2 0 0-.2-2.6 0-3l2.3 2.4-1.2-3.3s1.4 2 2.2 1.9l-1.8-2.7 1.8 1.4-2-3 1.8.6s-1.3-1.7-1.2-2.8l1.3 1.4s-.5-1.5-.4-2l.7.1-1.3-1.4.9-.2-.1-1 .6-.1v-1.1m-1.1 0c-2.2 3-1.1 7.5-2.4 9.9"/>
       </g>
-      <use xlink:href="#b" width="100%" height="100%" transform="matrix(-1 0 0 1 499.9 0)"/>
+      <use xlink:href="#ht-b" width="100%" height="100%" transform="matrix(-1 0 0 1 499.9 0)"/>
       <path d="M251 166.5s1.1-10 1.1-14.2c0-3.4-.8-10.8-.8-10.8H248s-.5 7.4-.4 10.8c0 4.2 1.1 14.2 1.1 14.2h2.3z"/>
       <path d="M247.7 142h4l-.5-2.7h-2.9l-.6 2.6z"/>
       <path d="M248 139.8h3.5l-.7-2.7h-2.2l-.7 2.7z"/>
@@ -54,12 +54,12 @@
       <path fill="#d20014" stroke="#d20014" d="M251.7 119.3c.6-.4 1-1.5.6-2.1-1-1.3-1.7-.8-3.4-1.4-.3.4-1 1-.9 1.6 2.3 1 1.4.2 2.2.3.4 0 .6.5 1.5 1.5z"/>
     </g>
     <g transform="translate(-80) scale(1.6)">
-      <use xlink:href="#c" width="100%" height="100%" transform="matrix(1 0 0 -1 0 320.4)"/>
+      <use xlink:href="#ht-c" width="100%" height="100%" transform="matrix(1 0 0 -1 0 320.4)"/>
       <path fill="#016a16" stroke="#fff" stroke-linecap="round" d="M238.4 161.8c0 1.2-.9 2.3-1.9 2.3s-1.8-1-1.8-2.4v-1.2h3.7v1.2z"/>
       <ellipse cx="236.5" cy="160.1" fill="#fff" stroke="none" rx="1.8" ry=".9"/>
       <path fill="#016a16" stroke="#f1b517" d="m236.1 161-.3-3.2h1.4l-.2 3.3h-.9z"/>
-      <path id="c" fill="#016a16" stroke="#fff" stroke-linecap="round" d="M238.5 160.1c-.2.5-1 .9-2 .9s-1.7-.4-2-.9a.8.8 0 0 0 0 .4c0 .7.9 1.2 2 1.2 1.2 0 2.1-.5 2.1-1.2a.8.8 0 0 0 0-.4z"/>
-      <g id="d">
+      <path id="ht-c" fill="#016a16" stroke="#fff" stroke-linecap="round" d="M238.5 160.1c-.2.5-1 .9-2 .9s-1.7-.4-2-.9a.8.8 0 0 0 0 .4c0 .7.9 1.2 2 1.2 1.2 0 2.1-.5 2.1-1.2a.8.8 0 0 0 0-.4z"/>
+      <g id="ht-d">
         <path d="m246 172.8-7-2.2-3.1-5.3-10.9-.5.4 4 9.3 1.7.8 1.6 10.7 3-.2-2.3z"/>
         <path fill="#503200" d="m238.7 174.3-11.2-16.5-.5.5 11 16.4.7-.4z"/>
         <path fill="#fff" d="m228.6 158.5-1.2-2c-.3-.4-.6-.5-1.1-.2-.5.2-.4.7-.2 1.1l1 1.9 1.5-.8z"/>
@@ -90,7 +90,7 @@
         <circle cx="220.8" cy="174.9" r=".7"/>
         <path fill-rule="evenodd" d="M236.5 178c0-.3-.8-.2-.8-.6 0-.4 1.2 0 1.3.3.7-.6 1-.2 1.4 0 .6-.8 1.3-.8 2-.2.4-.4 1.4-.3 1.7.2.7-.6 1.3-.5 1.7 0 .2-.3.5-.3.7 0 .3-.7 1.2-.5 1.6 0 .3-.4.7-.1 1.1.1.3-.2.8-.2.8 0 0 .4-.6.3-.6.6 0 .2.4 0 .4.4 0 .3-.6.4-.7 0-.3.4-1.1.2-1.2-.2a.8.8 0 0 1-1.2 0c-.3.2-.7.2-.8 0-.5.5-1.4.4-1.7-.2h-.3a1 1 0 0 1-1.5 0c-.9.6-1.4.4-1.9 0-.5.7-1.4.7-1.5 0-.4.3-1.2.4-1.2 0 0-.2.7-.1.7-.4zm1.6.1c0 .2-.2.3-.4.3s-.4-.1-.4-.3.1-.2.4-.2.4.1.4.2zm1.9-.2c0 .2-.3.3-.6.3s-.5-.1-.5-.3c0-.1.2-.3.5-.3s.5.2.5.3zm3.5.2c0 .2-.2.3-.5.3s-.4-.1-.4-.3c0-.1.2-.3.4-.3s.5.1.5.3zm-1.9 0c0 .2-.2.3-.5.3s-.4-.1-.4-.4c0-.2.2-.4.4-.4s.5.2.5.4zm4 0c0 .1-.1.3-.3.3-.3 0-.5-.2-.5-.4s.2-.3.5-.3c.2 0 .4.1.4.3zm-1.2 0c0 .2 0 .3-.2.3s-.3-.1-.3-.3.1-.2.3-.2l.2.2zm2.4.1c0 .2 0 .4-.3.4-.1 0-.3-.2-.3-.4s.2-.3.3-.3c.2 0 .3.1.3.3z"/>
       </g>
-      <use xlink:href="#d" width="100%" height="100%" transform="matrix(-1 0 0 1 499.9 0)"/>
+      <use xlink:href="#ht-d" width="100%" height="100%" transform="matrix(-1 0 0 1 499.9 0)"/>
       <path fill="#0a328c" stroke="#0a328c" d="M249.8 165.7c-2.5 0-4.5 1-4.5 2.1 0 .2 0 .4.2.6.5.6 2.3 1 4.4 1 2 0 3.6-.3 4.2-.9.2-.2.3-.4.3-.7 0-1.1-2-2-4.6-2z"/>
       <path d="M254.4 168v7c0 .9-2 1.5-4.5 1.5s-4.6-.6-4.6-1.5v-7c0 .8 2 1.5 4.5 1.5 2.6 0 4.6-.7 4.6-1.5z"/>
       <path fill="#d20014" stroke="#d20014" d="M245.3 168v1l2.2 7 1.8-5.4 2 5.5 1.3-5.2 1.8 3.5v-1.9l-1.6-3.4a8.3 8.3 0 0 1-.6.2l-1 3.8-1.5-3.6a14.5 14.5 0 0 1-.7 0l-1.5 3.6-1.6-4.4c-.4-.2-.6-.5-.6-.7z"/>