update BlazorGL templates (#1874)

Author: nkast

Templates/VisualStudio2022/ProjectTemplates/BlazorGL.NetCore/wwwroot/index.html

@@ -25,7 +25,7 @@
     <div id="blazor-error-ui">
         An unhandled error has occurred.
         <a href="" class="reload">Reload</a>
-        <a class="dismiss">🗙</a>
+        <a class="dismiss">x</a>
     </div>
 
     <script src="_framework/blazor.webassembly.js" autostart="false"></script>

Templates/VisualStudio2022/ProjectTemplates/Multiplatform.NetCore/BlazorGL/wwwroot/index.html

@@ -25,7 +25,7 @@
     <div id="blazor-error-ui">
         An unhandled error has occurred.
         <a href="" class="reload">Reload</a>
-        <a class="dismiss">🗙</a>
+        <a class="dismiss">x</a>
     </div>
 
     <script src="_framework/blazor.webassembly.js" autostart="false"></script>