Metadata: 'non-stable parameter names' flag for callables

^KT-34602

compiler/fir/fir-serialization/src/org/jetbrains/kotlin/fir/serialization/FirElementSerializer.kt

@@ -310,7 +310,8 @@ class FirElementSerializer private constructor(
             simpleFunction?.isTailRec == true,
             simpleFunction?.isExternal == true,
             simpleFunction?.isSuspend == true,
-            simpleFunction?.isExpect == true
+            simpleFunction?.isExpect == true,
+            true // TODO: supply 'hasStableParameterNames' flag for metadata
         )
         if (flags != builder.flags) {
             builder.flags = flags
@@ -439,7 +440,8 @@ class FirElementSerializer private constructor(
         val flags = Flags.getConstructorFlags(
             constructor.nonSourceAnnotations(session).isNotEmpty(),
             ProtoEnumFlags.visibility(normalizeVisibility(constructor)),
-            !constructor.isPrimary
+            !constructor.isPrimary,
+            true // TODO: supply 'hasStableParameterNames' flag for metadata
         )
         if (flags != builder.flags) {
             builder.flags = flags

compiler/fir/resolve/src/org/jetbrains/kotlin/fir/resolve/calls/FirArgumentsToParametersMapper.kt

@@ -264,7 +264,9 @@ private class FirCallArgumentsProcessor(private val function: FirFunction<*>) {
     private val FirExpression.argumentName: Name?
         get() = (this as? FirNamedArgumentExpression)?.name
 
-    // TODO: handle java functions
+    // TODO: handle functions with non-stable parameter names, see also
+    //  org.jetbrains.kotlin.fir.serialization.FirElementSerializer.functionProto
+    //  org.jetbrains.kotlin.fir.serialization.FirElementSerializer.constructorProto
     private val FirFunction<*>.hasStableParameterNames: Boolean
         get() = true
 }