[FIR, IR] Fix name mangling for functions with context receivers

- Mangled names of property accessors now include context receiver
  types of the corresponding property when computed from FIR.
- Context receivers are now supported when computing mangled names
  from IR
- IrBasedDescriptors now account for context receivers

^KT-57435 Fixed

compiler/testData/ir/irText/declarations/contextReceivers/thisWithCustomLabel.kt

@@ -4,7 +4,7 @@
 // IGNORE_BACKEND_K1: JS_IR_ES6
 
 // MUTE_SIGNATURE_COMPARISON_K2: ANY
-// ^ KT-57429, KT-57435
+// ^ KT-57429
 
 class A<T>(val a: T)
 class B(val b: Any)