ci: fix/set MtouchUseLlvm=false to speed up the macOS build

Author: jpnurmi

integration-test/common.ps1

@@ -209,6 +209,7 @@ BeforeAll {
       <SentryUploadAndroidProguardMapping>true</SentryUploadAndroidProguardMapping>
       <AndroidLinkTool Condition=`" '`$(AndroidLinkTool)' == '' `">r8</AndroidLinkTool>
       <AndroidDexTool Condition=`" '`$(AndroidDexTool)' == '' `">d8</AndroidDexTool>
+      <MtouchUseLlvm Condition=`"'`$(Configuration)' == 'Release'`">false</MtouchUseLlvm>
   </PropertyGroup>
 </Project>
 "@ | Out-File $name/Directory.Build.props

samples/Directory.Build.props

@@ -7,7 +7,7 @@
   </PropertyGroup>
 
   <!-- Workaround for hang on compile issue.  See https://github.com/xamarin/xamarin-macios/issues/17825#issuecomment-1478568270. -->
-  <PropertyGroup Condition="'$(Configuration)' == 'Release' And $([MSBuild]::GetTargetPlatformIdentifier('$(TargetFramework)')) == 'ios'">
+  <PropertyGroup Condition="'$(Configuration)' == 'Release'">
     <MtouchUseLlvm>false</MtouchUseLlvm>
   </PropertyGroup>