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/codegen/box/delegatedProperty/delegateToAnother.kt

@@ -0,0 +1,9 @@
+// WITH_REFLECT
+// WITH_RUNTIME
+class C(val x: String)
+
+val x = "O"
+val y by ::x
+val z by C("K")::x
+
+fun box(): String = y + z