Do not request FirProvider for built-in synthesized classes

Because currently they don't have FIR and it might fail with an exception

compiler/fir/resolve/src/org/jetbrains/kotlin/fir/resolve/transformers/FirSupertypeResolverTransformer.kt

@@ -145,7 +145,6 @@ class FirSupertypeResolverTransformer : FirAbstractTreeTransformer() {
                 }
 
                 val sessionForSupertype = session.getService(FirSymbolProvider::class).getSessionForClass(superTypeClassId) ?: continue
-                val provider = sessionForSupertype.getService(FirProvider::class)
 
                 val firClassForSupertype =
                     sessionForSupertype
@@ -155,6 +154,7 @@ class FirSupertypeResolverTransformer : FirAbstractTreeTransformer() {
 
                 // TODO: this if is a temporary hack for built-in types (because we can't load file for them)
                 if (firClassForSupertype == null || firClassForSupertype.superTypeRefs.any { it !is FirResolvedTypeRef }) {
+                    val provider = sessionForSupertype.getService(FirProvider::class)
                     val firForSuperClassFile = provider.getFirClassifierContainerFile(superTypeClassId)
 
                     ResolveSuperTypesTask(