Move back the default switch values for the linker tests

Author: MaximLipnin

eng/testing/linker/SupportFiles/Directory.Build.props

@@ -1,6 +1,9 @@
 <Project>
   <PropertyGroup>
     <SkipConfigureTrimming>true</SkipConfigureTrimming>
+    <UseDefaultBlazorWASMFeatureSwitches>false</UseDefaultBlazorWASMFeatureSwitches>
+    <UseDefaultAndroidFeatureSwitches>false</UseDefaultAndroidFeatureSwitches>
+    <UseDefaultiOSFeatureSwitches>false</UseDefaultiOSFeatureSwitches>
     <PublishTrimmed>true</PublishTrimmed>
     <SkipImportRepoLinkerTargets>true</SkipImportRepoLinkerTargets>
     <TrimMode>link</TrimMode>