[stdlib-mpp] Move KGP obsolete property suppress closer to usage

Also remove no-op property enableGranularSourceSetsMetadata

gradle.properties

@@ -59,7 +59,6 @@ kotlin.js.stdlib.dom.api.included=false
 kotlin.stdlib.mpp=true
 
 # Suppress warnings about using deprecated and unstable plugins in kotlin-stdlib
-kotlin.internal.suppressGradlePluginErrors=PreHMPPFlagsError
 kotlin.internal.mpp12x.deprecation.suppress=true
 kotlin.mpp.stability.nowarn=true
 kotlin.wasm.stability.nowarn=true

libraries/stdlib/gradle.properties

@@ -1,3 +1,3 @@
-kotlin.mpp.enableGranularSourceSetsMetadata=true
+kotlin.internal.suppressGradlePluginErrors=PreHMPPFlagsError
 kotlin.mpp.enableCompatibilityMetadataVariant=true
 kotlin.internal.mpp.createDefaultMultiplatformPublications=false