Call Hierarchy: Refactoring

Do not rely on light methods to search usages as some elements
don't have them (e.g. local functions)

 #KT-9288 Fixed
 #KT-14428 Fixed

idea/testData/hierarchy/calls/callers/callInsideAnonymousFun/CallInsideAnonymousFun_verification.xml

@@ -0,0 +1,5 @@
+<node text="foo()  ()" base="true">
+    <node text="bar()  ()">
+        <node text="baz()  ()"/>
+    </node>
+</node>

idea/testData/hierarchy/calls/callers/callInsideAnonymousFun/main0.kt

@@ -0,0 +1,11 @@
+fun <caret>foo() = 1
+
+fun bar() {
+    val x = fun () {
+        val y = foo()
+    }
+}
+
+fun baz() {
+    bar()
+}

idea/testData/hierarchy/calls/callers/callInsideLambda/CallInsideLambda_verification.xml

@@ -0,0 +1,5 @@
+<node text="foo()  ()" base="true">
+    <node text="bar()  ()">
+        <node text="baz()  ()"/>
+    </node>
+</node>

idea/testData/hierarchy/calls/callers/callInsideLambda/main0.kt

@@ -0,0 +1,11 @@
+fun <caret>foo() = 1
+
+fun bar() {
+    val x = {
+        val y = foo()
+    }
+}
+
+fun baz() {
+    bar()
+}