[rel/3.8] Try out props/targets refactoring (#5219)

Co-authored-by: Youssef1313 <[email protected]>

Author: youssef-backport-bot

src/Adapter/MSTest.TestAdapter/buildTransitive/common/MSTest.TestAdapter.props

@@ -2,8 +2,6 @@
 
   <PropertyGroup>
     <EnableMSTestV2CopyResources Condition=" '$(EnableMSTestV2CopyResources)' == '' ">true</EnableMSTestV2CopyResources>
-    <EnableMSTestRunner Condition=" '$(EnableMSTestRunner)' == '' ">false</EnableMSTestRunner>
-    <IsTestingPlatformApplication>$(EnableMSTestRunner)</IsTestingPlatformApplication>
   </PropertyGroup>
 
   <ItemGroup>

src/Adapter/MSTest.TestAdapter/buildTransitive/common/MSTest.TestAdapter.targets

@@ -2,10 +2,10 @@
 
   <!-- Handle the coexistence between testing platform and Microsoft.NET.Test.Sdk  -->
   <PropertyGroup>
-    <GenerateTestingPlatformEntryPoint Condition=" '$(GenerateTestingPlatformEntryPoint)' == '' ">$(EnableMSTestRunner)</GenerateTestingPlatformEntryPoint>
-    <GenerateSelfRegisteredExtensions Condition=" '$(GenerateSelfRegisteredExtensions)' == '' ">$(EnableMSTestRunner)</GenerateSelfRegisteredExtensions>
+    <EnableMSTestRunner Condition=" '$(EnableMSTestRunner)' == '' ">false</EnableMSTestRunner>
+    <IsTestingPlatformApplication>$(EnableMSTestRunner)</IsTestingPlatformApplication>
+
     <GenerateProgramFile Condition=" '$(EnableMSTestRunner)' == 'true' ">false</GenerateProgramFile>
-    <DisableTestingPlatformServerCapability Condition=" '$(EnableMSTestRunner)' == 'false' or '$(EnableMSTestRunner)' == '' " >true</DisableTestingPlatformServerCapability>
   </PropertyGroup>
 
   <PropertyGroup Condition=" '$(UseWinUI)' == 'true' ">

src/Platform/Microsoft.Testing.Platform.MSBuild/buildMultiTargeting/Microsoft.Testing.Platform.MSBuild.props

@@ -1,10 +1,5 @@
 <?xml version="1.0" encoding="utf-8" ?>
 <Project>
-  <PropertyGroup>
-    <!-- This is the knob to disable completely for this project the machinery -->
-    <IsTestingPlatformApplication Condition=" '$(IsTestingPlatformApplication)' == '' ">True</IsTestingPlatformApplication>
-  </PropertyGroup>
-
   <!-- Register the PlatformOutputDevice extension -->
   <ItemGroup>
     <TestingPlatformBuilderHook Include="8214564B-6107-422D-8A82-462F97602287" >