[FIR] Signature composer: return null signature for local declarations

compiler/fir/fir2ir/src/org/jetbrains/kotlin/fir/signaturer/FirBasedSignatureComposer.kt

@@ -62,6 +62,10 @@ class FirBasedSignatureComposer(private val mangler: FirMangler) : Fir2IrSignatu
 
     override fun composeSignature(declaration: FirDeclaration): IdSignature? {
         if (declaration is FirAnonymousObject || declaration is FirAnonymousFunction) return null
+        if (declaration is FirRegularClass && declaration.classId.isLocal) return null
+        if (declaration is FirCallableMemberDeclaration<*>) {
+            if (declaration.visibility == Visibilities.Local || declaration.symbol.callableId.classId?.isLocal == true) return null
+        }
         val builder = SignatureBuilder()
         try {
             declaration.accept(builder)

compiler/testData/codegen/box/delegatedProperty/provideDelegate/provideDelegateByExtensionFunction.kt

@@ -1,5 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
-
 import kotlin.reflect.KProperty
 
 class TypeInference {