[FIR] Use proper FirProvider in the FirKLibSerializerExtension

3aa84906 changed native metadata serialization to use proper platform
  session, but it caused a new bug: FirKLibSerializerExtension uses
  FirProvider from the passed session to get a containing file of
  serialized declaration to put some extension into the metadata. And
  platform session doesn't contain information about any declarations
  except platform ones

So it's needed to use the proper FirProvider in it, which can be
  extracted from Fir2IrComponents. This provider contains providers from
  all sessions that are being compiled plus providers for top-level
  declarations generated by compiler plugins

^KT-65024 Fixed

kotlin-native/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/FirNativeSerializer.kt

@@ -26,6 +26,7 @@ import org.jetbrains.kotlin.fir.moduleData
 import org.jetbrains.kotlin.fir.packageFqName
 import org.jetbrains.kotlin.fir.pipeline.FirResult
 import org.jetbrains.kotlin.fir.resolve.ScopeSession
+import org.jetbrains.kotlin.fir.resolve.providers.firProvider
 import org.jetbrains.kotlin.fir.serialization.*
 import org.jetbrains.kotlin.ir.declarations.IrModuleFragment
 import org.jetbrains.kotlin.ir.util.IrMessageLogger
@@ -87,13 +88,14 @@ internal fun PhaseContext.firSerializerBase(
     ) { firFile, originalSession, originalScopeSession ->
         val session = fir2IrOutput?.components?.session ?: originalSession
         val scopeSession = fir2IrOutput?.components?.scopeSession ?: originalScopeSession
+        val firProvider = fir2IrOutput?.components?.firProvider ?: originalSession.firProvider
         serializeSingleFirFile(
                 firFile,
                 session,
                 scopeSession,
                 actualizedFirDeclarations,
                 FirKLibSerializerExtension(
-                        session, metadataVersion,
+                        session, firProvider, metadataVersion,
                         fir2IrOutput?.let {
                             ConstValueProviderImpl(fir2IrOutput.components)
                         },