Improve inference on generics for callable references

#KT-10711 Fixed
 #KT-12802 Fixed
 #KT-12964 Fixed
 #KT-15439 Fixed

Analyze callable references in `dependent` mode, then complete them with
respect to expected types

compiler/testData/diagnostics/tests/callableReference/generic/kt7470.kt

@@ -0,0 +1,8 @@
+// !DIAGNOSTICS: -UNUSED_VARIABLE
+
+
+fun <T> shuffle(x: List<T>): List<T> = x
+
+fun bar() {
+    val s: (List<String>) -> List<String> = ::shuffle
+}