JVM IR: don't generate ACC_FINAL on DefaultImpls methods

To replicate behavior of old backend

compiler/ir/backend.common/src/org/jetbrains/kotlin/backend/common/ir/IrUtils.kt

@@ -515,6 +515,7 @@ fun createStaticFunctionWithReceivers(
     oldFunction: IrFunction,
     dispatchReceiverType: IrType? = oldFunction.dispatchReceiverParameter?.type,
     origin: IrDeclarationOrigin = oldFunction.origin,
+    modality: Modality = Modality.FINAL,
     copyBody: Boolean = true
 ): IrSimpleFunction {
     val descriptor = WrappedSimpleFunctionDescriptor(Annotations.EMPTY, oldFunction.descriptor.source)
@@ -524,7 +525,7 @@ fun createStaticFunctionWithReceivers(
         IrSimpleFunctionSymbolImpl(descriptor),
         name,
         oldFunction.visibility,
-        Modality.FINAL,
+        modality,
         oldFunction.returnType,
         isInline = oldFunction.isInline,
         isExternal = false, isTailrec = false, isSuspend = false