[JS IR] IC: avoid conflicts in local declaration signatures

compiler/ir/serialization.common/src/org/jetbrains/kotlin/backend/common/serialization/IrFileDeserializer.kt

@@ -73,6 +73,7 @@ class FileDeserializationState(
             fileProto.actualList,
             ::addIdSignature,
             linker::handleExpectActualMapping,
+            symbolProcessor = linker.symbolProcessor,
         ) { idSig, symbolKind ->
 
             val topLevelSig = idSig.topLevelSignature()

compiler/ir/serialization.common/src/org/jetbrains/kotlin/backend/common/serialization/IrSymbolDeserializer.kt

@@ -27,6 +27,7 @@ class IrSymbolDeserializer(
     val handleExpectActualMapping: (IdSignature, IrSymbol) -> IrSymbol,
     private val enqueueAllDeclarations: Boolean = false,
     val deserializedSymbols: MutableMap<IdSignature, IrSymbol> = mutableMapOf(), // Per-file signature cache. TODO: do we really need it?
+    val symbolProcessor: IrSymbolDeserializer.(IrSymbol, IdSignature) -> IrSymbol = { s, _ -> s },
     val deserializePublicSymbol: (IdSignature, BinarySymbolData.SymbolKind) -> IrSymbol,
 ) {
 
@@ -39,7 +40,7 @@ class IrSymbolDeserializer(
     }
 
     private fun referenceDeserializedSymbol(symbolKind: BinarySymbolData.SymbolKind, idSig: IdSignature): IrSymbol {
-        return referenceDeserializedSymbol(symbolTable, fileSymbol, symbolKind, idSig)
+        return symbolProcessor(referenceDeserializedSymbol(symbolTable, fileSymbol, symbolKind, idSig), idSig)
     }
 
     fun referenceLocalIrSymbol(symbol: IrSymbol, signature: IdSignature) {

compiler/ir/serialization.common/src/org/jetbrains/kotlin/backend/common/serialization/KotlinIrLinker.kt

@@ -36,7 +36,8 @@ abstract class KotlinIrLinker(
     val builtIns: IrBuiltIns,
     val symbolTable: SymbolTable,
     private val exportedDependencies: List<ModuleDescriptor>,
-    private val allowUnboundSymbols: Boolean = false
+    private val allowUnboundSymbols: Boolean = false,
+    val symbolProcessor: IrSymbolDeserializer.(IrSymbol, IdSignature) -> IrSymbol = { s, _ -> s },
 ) : IrDeserializer, FileLocalAwareLinker {
 
     // Kotlin-MPP related data. Consider some refactoring