FIR: add a resolution mode for property delegates

Like function arguments, they are context-dependent, but unlike function
arguments, callable references should be resolved eagerly as if they are
explicit receivers.

compiler/testData/diagnostics/tests/delegatedProperty/provideDelegate/provideDelegateOnFunctionalTypeWithThis.fir.fail

@@ -1,2 +0,0 @@
-Failures detected in FirBodyResolveTransformerAdapter, file: /provideDelegateOnFunctionalTypeWithThis.fir.kt
-Cause: java.lang.ClassCastException: org.jetbrains.kotlin.fir.types.impl.FirImplicitTypeRefImpl cannot be cast to org.jetbrains.kotlin.fir.types.FirResolvedTypeRef

compiler/testData/diagnostics/tests/delegatedProperty/provideDelegate/provideDelegateOnFunctionalTypeWithThis.fir.kt

@@ -13,7 +13,7 @@ fun wrong(arg: Wrong) {}
 class Wrong
 
 class Right {
-    val prop: () -> Unit by <!DELEGATE_SPECIAL_FUNCTION_MISSING, DELEGATE_SPECIAL_FUNCTION_NONE_APPLICABLE!>::wrong<!>
+    val prop: () -> Unit by <!UNRESOLVED_REFERENCE!>::wrong<!>
 }
 
 fun box(): String {