KT-5072 Values of extension function type are not seen in completion

#KT-5072 Fixed

idea/idea-completion/testData/basic/common/extensionFunctionTypeValues/ImplicitReceiver.kt

@@ -0,0 +1,8 @@
+class C
+
+fun C.test(foo: C.() -> Unit) {
+    fo<caret>
+}
+
+// EXIST: { lookupString: "foo", itemText: "foo", tailText: null, typeText: "C.() -> Unit" }
+// ABSENT: { itemText: "foo", typeText: "Unit" }

idea/idea-completion/testData/basic/common/extensionFunctionTypeValues/SafeCall.kt

@@ -0,0 +1,5 @@
+fun test(i: Int?, foo: Int.(String) -> Char) {
+    i?.fo<caret>
+}
+
+// EXIST: { lookupString: "foo", itemText: "foo", tailText: "(String)", typeText: "Char", attributes: "bold" }

idea/idea-completion/testData/basic/common/extensionFunctionTypeValues/Simple.kt

@@ -0,0 +1,6 @@
+fun test(i: Int, foo: Int.(String) -> Char, fooAny: Any.() -> Unit) {
+    i.fo<caret>
+}
+
+// EXIST: { lookupString: "foo", itemText: "foo", tailText: "(String)", typeText: "Char", attributes: "bold" }
+// EXIST: { lookupString: "fooAny", itemText: "fooAny", tailText: "()", typeText: "Unit", attributes: "" }

idea/idea-completion/testData/basic/common/extensionFunctionTypeValues/SmartCast.kt

@@ -0,0 +1,11 @@
+interface I
+interface J
+
+fun test(p: I, fooI: I.() -> Unit, fooJ: J.() -> Unit) {
+    if (p is J) {
+        p.fo<caret>
+    }
+}
+
+// EXIST: { lookupString: "fooI", itemText: "fooI", tailText: "()", typeText: "Unit", attributes: "bold" }
+// EXIST: { lookupString: "fooJ", itemText: "fooJ", tailText: "()", typeText: "Unit", attributes: "bold" }