[Gradle] Restore AbstractKotlinCompilation and AbstractKotlinCompilationToRunnableFiles...

... into KotlinCompilation class hierarchy (scheduled for removal later)

KT-54312

libraries/tools/kotlin-gradle-plugin-api/src/common/kotlin/org/jetbrains/kotlin/gradle/plugin/KotlinCompilation.kt

@@ -121,7 +121,7 @@ interface KotlinCompilation<out T : KotlinCommonOptionsDeprecated> : Named,
         get() = target.disambiguationClassifier + name
 }
 
-// TODO NOW: Revisit/Remove?
+@Deprecated("Scheduled for removal with Kotlin 1.9")
 interface KotlinCompilationToRunnableFiles<T : KotlinCommonOptionsDeprecated> : KotlinCompilation<T> {
     override val runtimeDependencyConfigurationName: String
 
@@ -132,7 +132,7 @@ interface KotlinCompilationToRunnableFiles<T : KotlinCommonOptionsDeprecated> :
 }
 
 @Deprecated("Scheduled for removal with Kotlin 1.9")
-@Suppress("EXTENSION_SHADOWED_BY_MEMBER") // kept for compatibility
+@Suppress("EXTENSION_SHADOWED_BY_MEMBER", "deprecation") // kept for compatibility
 val <T : KotlinCommonOptionsDeprecated> KotlinCompilation<T>.runtimeDependencyConfigurationName: String?
     get() = (this as? KotlinCompilationToRunnableFiles<T>)?.runtimeDependencyConfigurationName
 

libraries/tools/kotlin-gradle-plugin-api/src/common/kotlin/org/jetbrains/kotlin/gradle/plugin/KotlinExecution.kt

@@ -39,6 +39,7 @@ interface CompilationExecutionSource<CompilationType : KotlinCompilation<*>> : E
     val compilation: CompilationType
 }
 
+@Suppress("deprecation")
 interface CompilationExecutionSourceSupport<in T : KotlinCompilationToRunnableFiles<*>> {
     /**
      * Select a compilation to run the execution from.