K2/Native: fix builtIns predicate in fir2ir phase

Old implementation expected that builtIns should be based on a library
with no dependencies, usually stdlib. But that doesn't work properly in
some cases, e.g. when producing a metadata klib (-Xmetadata-klib) for
HMPP. In that case, some of the metadata dependencies can have no
depends= in the manifest, leading to the compiler choosing such a module
instead of stdlib.

This commit makes it look for a library that is explicitly stdlib
instead.

^KT-56071

kotlin-native/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/Fir2Ir.kt

@@ -16,6 +16,7 @@ import org.jetbrains.kotlin.builtins.konan.KonanBuiltIns
 import org.jetbrains.kotlin.config.languageVersionSettings
 import org.jetbrains.kotlin.descriptors.deserialization.PlatformDependentTypeTransformer
 import org.jetbrains.kotlin.descriptors.impl.ModuleDescriptorImpl
+import org.jetbrains.kotlin.descriptors.konan.isNativeStdlib
 import org.jetbrains.kotlin.fir.FirSession
 import org.jetbrains.kotlin.fir.backend.*
 import org.jetbrains.kotlin.fir.backend.jvm.Fir2IrJvmSpecialAnnotationSymbolProvider
@@ -62,7 +63,7 @@ internal fun PhaseContext.fir2Ir(
         dependencies += moduleDescriptor
         moduleDescriptor.setDependencies(ArrayList(dependencies))
 
-        val isBuiltIns = resolvedLibrary.library.unresolvedDependencies.isEmpty()
+        val isBuiltIns = moduleDescriptor.isNativeStdlib()
         if (isBuiltIns) builtInsModule = moduleDescriptor.builtIns
 
         moduleDescriptor