[FIR2IR] Temporary fix of createIrEnumEntry

Check if a bound entry with the same signature is already exist

compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/util/SymbolTable.kt

@@ -664,6 +664,10 @@ open class SymbolTable(
             else IrEnumEntrySymbolImpl()
         }
 
+    fun referenceEnumEntryIfAny(sig: IdSignature): IrEnumEntrySymbol? {
+        return enumEntrySymbolTable.get(sig)
+    }
+
     val unboundEnumEntries: Set<IrEnumEntrySymbol> get() = enumEntrySymbolTable.unboundSymbols
 
     private fun createFieldSymbol(descriptor: PropertyDescriptor, signature: IdSignature?): IrFieldSymbol =