Switch to VS preview pool for public builds (#50993)

* Switch to VS preview pool for public builds

Should help mitigate #50746

* Run init-vs-env.cmd for Browser wasm Windows build

The BuildPool.Windows.10.Amd64.VS2019.Pre.Open queue doesn't have ninja installed outside of VS so it's only available in PATH if you run the init-vs-env.cmd script.

Author: akoeplinger

eng/pipelines/common/xplat-setup.yml

@@ -131,7 +131,7 @@ jobs:
         # Public Windows Build Pool
         ${{ if and(or(eq(parameters.osGroup, 'windows'), eq(parameters.hostedOs, 'windows')), eq(variables['System.TeamProject'], 'public')) }}:
           name: NetCorePublic-Pool
-          queue: BuildPool.Windows.10.Amd64.VS2019.Open
+          queue: BuildPool.Windows.10.Amd64.VS2019.Pre.Open
 
 
     ${{ if eq(parameters.helixQueuesTemplate, '') }}:

src/mono/mono.proj

@@ -96,11 +96,11 @@
       <_MonoUseNinja Condition="'$(Ninja)' == 'true' or '$(_MonoFindNinjaExitCode)' == '0' or ('$(OS)' == 'Windows_NT' and '$(Ninja)' == '')">true</_MonoUseNinja>
     </PropertyGroup>
 
-    <Exec Condition="'$(TargetArchitecture)' == 'wasm' and '$(OS)' == 'Windows_NT'" Command="cmake --version" IgnoreExitCode="true" IgnoreStandardErrorWarningFormat="true" StandardOutputImportance="Low" >
+    <Exec Condition="'$(TargetArchitecture)' == 'wasm' and '$(OS)' == 'Windows_NT'" Command="call &quot;$(RepositoryEngineeringDir)native\init-vs-env.cmd&quot; &amp;&amp; cmake --version" IgnoreExitCode="true" IgnoreStandardErrorWarningFormat="true" StandardOutputImportance="Low" >
       <Output TaskParameter="ExitCode" PropertyName="_MonoFindCmakeExitCode"/>
     </Exec>
     <Error Condition="'$(TargetArchitecture)' == 'wasm' and '$(OS)' == 'Windows_NT' and '$(_MonoFindCmakeExitCode)' != '0' and '$(BuildMonoAOTCrossCompilerOnly)' != 'true'" Text="cmake tool is required to build wasm on windows" />
-    <Exec Condition="'$(TargetArchitecture)' == 'wasm' and '$(OS)' == 'Windows_NT'" Command="ninja --version" IgnoreExitCode="true" IgnoreStandardErrorWarningFormat="true" StandardOutputImportance="Low" >
+    <Exec Condition="'$(TargetArchitecture)' == 'wasm' and '$(OS)' == 'Windows_NT'" Command="call &quot;$(RepositoryEngineeringDir)native\init-vs-env.cmd&quot; &amp;&amp; ninja --version" IgnoreExitCode="true" IgnoreStandardErrorWarningFormat="true" StandardOutputImportance="Low" >
       <Output TaskParameter="ExitCode" PropertyName="_MonoFindNinjaExitCode"/>
     </Exec>
     <Error Condition="'$(TargetArchitecture)' == 'wasm' and '$(OS)' == 'Windows_NT' and '$(_MonoFindNinjaExitCode)' != '0' and '$(BuildMonoAOTCrossCompilerOnly)' != 'true'" Text="ninja tool is required to build wasm on windows" />
@@ -413,7 +413,7 @@
       <_MonoCMakeConfigureCommand Condition="'$(TargetsBrowser)' != 'true' and '$(_MonoRunInitCompiler)' != 'false' and '$(OS)' == 'Windows_NT'">call &quot;$(RepositoryEngineeringDir)native\init-vs-env.cmd&quot; $(_CompilerTargetArch) &amp;&amp; cd /D &quot;$(MonoObjDir)&quot; &amp;&amp; @(_MonoBuildEnv, ' ') $(_MonoCMakeConfigureCommand)</_MonoCMakeConfigureCommand>
       <_MonoCMakeConfigureCommand Condition="'$(TargetsBrowser)' != 'true' and '$(_MonoRunInitCompiler)' == 'false'">$(_MonoCCOption) $(_MonoCXXOption) @(_MonoBuildEnv, ' ') $(_MonoCMakeConfigureCommand)</_MonoCMakeConfigureCommand>
       <_MonoCMakeConfigureCommand Condition="'$(TargetsBrowser)' == 'true' and '$(OS)' != 'Windows_NT'">bash -c 'source $(EMSDK_PATH)/emsdk_env.sh 2>&amp;1 &amp;&amp; emcmake $(_MonoCMakeConfigureCommand)'</_MonoCMakeConfigureCommand>
-      <_MonoCMakeConfigureCommand Condition="'$(TargetsBrowser)' == 'true' and '$(OS)' == 'Windows_NT'">call &quot;$([MSBuild]::NormalizePath('$(EMSDK_PATH)', 'emsdk_env.bat'))&quot; &amp;&amp; emcmake $(_MonoCMakeConfigureCommand)</_MonoCMakeConfigureCommand>
+      <_MonoCMakeConfigureCommand Condition="'$(TargetsBrowser)' == 'true' and '$(OS)' == 'Windows_NT'">call &quot;$(RepositoryEngineeringDir)native\init-vs-env.cmd&quot; &amp;&amp; call &quot;$([MSBuild]::NormalizePath('$(EMSDK_PATH)', 'emsdk_env.bat'))&quot; &amp;&amp; emcmake $(_MonoCMakeConfigureCommand)</_MonoCMakeConfigureCommand>
 
       <_MonoCMakeBuildCommand>cmake --build . --target install --config $(Configuration)</_MonoCMakeBuildCommand>
       <_MonoCMakeBuildCommand Condition="'$(MonoVerboseBuild)' == 'true'">$(_MonoCMakeBuildCommand) --verbose</_MonoCMakeBuildCommand>