[dotnet] Don't suppress trimmer warnings anymore when 'TrimMode=full' is set.

Author: rolfbjarne

dotnet/targets/Xamarin.Shared.Sdk.props

@@ -47,7 +47,6 @@
 		-->
 		<_OriginalSuppressTrimAnalysisWarnings>$(SuppressTrimAnalysisWarnings)</_OriginalSuppressTrimAnalysisWarnings>
 		<SuppressTrimAnalysisWarnings Condition="'$(_UseNativeAot)' == 'true'">true</SuppressTrimAnalysisWarnings>
-		<SuppressTrimAnalysisWarnings Condition="'$(SuppressTrimAnalysisWarnings)' == ''">true</SuppressTrimAnalysisWarnings>
 
 		<AfterMicrosoftNETSdkTargets>$(AfterMicrosoftNETSdkTargets);$(MSBuildThisFileDirectory)Microsoft.$(_PlatformName).Sdk.targets</AfterMicrosoftNETSdkTargets>
 

dotnet/targets/Xamarin.Shared.Sdk.targets

@@ -526,6 +526,10 @@
 			<!-- Yep, we want to run ILLink as well, because we need our custom steps to run (NativeAOT sets this to false, so set it back to true) -->
 			<RunILLink Condition="'$(PublishAot)' == 'true'">true</RunILLink>
 
+			<!-- Suppress trimmer warnings unless we're trimming all assemblies -->
+			<SuppressTrimAnalysisWarnings Condition="'$(SuppressTrimAnalysisWarnings)' == '' And '$(TrimMode)' == 'full'">false</SuppressTrimAnalysisWarnings>
+			<SuppressTrimAnalysisWarnings Condition="'$(SuppressTrimAnalysisWarnings)' == '''">true</SuppressTrimAnalysisWarnings>
+
 			<!-- Pass the custom options to our custom steps -->
 			<_CustomLinkerOptionsFile>$([System.IO.Path]::GetFullPath('$(IntermediateOutputPath)custom-linker-options.txt'))</_CustomLinkerOptionsFile>
 			<_CustomLinkerOptionsFile Condition="'$(BuildSessionId)' != ''">$(IntermediateOutputPath)custom-linker-options.txt</_CustomLinkerOptionsFile>