Added flag for unknown countries

res/flags/xx.svg

@@ -1,4 +1,44 @@
-<svg xmlns="http://www.w3.org/2000/svg" id="flag-icons-xx" viewBox="0 0 640 480">
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
-  <path fill="#fff" fill-rule="evenodd" stroke="#adb5bd" stroke-width="1.1" d="M.5.5h638.9v478.9H.5z"/>
+<svg
-  <path fill="none" stroke="#adb5bd" stroke-width="1.1" d="m.5.5 639 479M639.5.5l-639 479"/>
+   id="flag-icons-us"
+   viewBox="0 0 640 480"
+   version="1.1"
+   sodipodi:docname="??.svg"
+   inkscape:version="1.3 (0e150ed6c4, 2023-07-21)"
+   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
+   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:svg="http://www.w3.org/2000/svg">
+  <defs
+     id="defs4" />
+  <sodipodi:namedview
+     id="namedview4"
+     pagecolor="#ffffff"
+     bordercolor="#999999"
+     borderopacity="1"
+     inkscape:showpageshadow="0"
+     inkscape:pageopacity="0"
+     inkscape:pagecheckerboard="0"
+     inkscape:deskcolor="#d1d1d1"
+     inkscape:zoom="1.8295363"
+     inkscape:cx="391.356"
+     inkscape:cy="277.93928"
+     inkscape:window-width="2560"
+     inkscape:window-height="1035"
+     inkscape:window-x="0"
+     inkscape:window-y="21"
+     inkscape:window-maximized="1"
+     inkscape:current-layer="flag-icons-us" />
+  <rect
+     style="fill:#003399;fill-rule:evenodd;stroke-width:2.59276;stroke-linecap:square;stroke-linejoin:round;paint-order:markers stroke fill"
+     id="rect4"
+     width="640"
+     height="480"
+     x="0"
+     y="0" />
+  <path
+     style="font-size:377.089px;line-height:1.25;font-family:OfficinaSanITCBoo;-inkscape-font-specification:OfficinaSanITCBoo;text-align:center;word-spacing:0px;text-anchor:middle;fill:#ffffff;stroke-width:1.964"
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+     id="text4"
+     aria-label="???" />
 </svg>