[FIR] Add receiver type to UNRESOLVED_REFERENCE error message if present

[rpaouline]

This helps the user know the type they are acting on, which would make it more obvious the user is acting on the wrong type.

#KT-73431

[rpaouline]

There are two tests that need to be updated with this change:
FirPsiAssignmentPluginDiagnosticTestGenerated. testOtherOperators()
FirPsiAssignmentPluginDiagnosticTestGenerated. testPlusAssignPrecedence()

Can you update them too? I'm not familiar with the test generator format that creates them

[mglukhikh]

From my side I'd recommend to add at least one test that shows how a new message looks like. There are two ways to do it:

• manually change a tag <!UNRESOLVED_REFERENCE!>something<!> to <!UNRESOLVED_REFERENCE("")!>something<!> in some of .kt or .fir.kt diagnostic test files, then run the corresponding test and the rest runner will suggest to add diagnostic parameters into ""
• or, you can add // RENDER_DIAGNOSTICS_FULL_TEXT directive at top of some diagnostic tests, then the test runner will generate additional file with diagnostic full text for you