[FIR] Fix references to generic synthetic properties

When synthetic properties are built from a substitution override,
set originalForSubstitutionOverride, too.

^KT-56251 Fixed

compiler/testData/codegen/box/delegatedProperty/delegateToAnother/genericJavaProperty.kt

@@ -1,5 +1,5 @@
 // TARGET_BACKEND: JVM
-// IGNORE_BACKEND_K2: JVM_IR, JS_IR
+// IGNORE_BACKEND_K2: JS_IR
 // WITH_REFLECT
 // WITH_STDLIB
 // FILE: J.java