[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/function.sig.kt.txt

@@ -28,8 +28,7 @@ fun bar(c: C): Unit
   local fun C.<anonymous>(): Unit
 
 // CHECK:
-//   Mangled name computed from Ir:         #foo(C){}
-//   Mangled name computed from Descriptor: #foo!C(){}
+//   Mangled name: #foo!C(){}
 //   Public signature: /foo|-1491377105373055541[0]
 fun foo($context_receiver_0: C): Unit