Find Usages: Disable by-convention search of invoke(). Improve scanner

accuracy when indexing possible references to component functions

idea/testData/findUsages/kotlin/conventions/invoke.results.txt

@@ -1,2 +1 @@
 Function call (9: 10) B(1).invoke(2)
-Implicit 'invoke' (10: 5) B(1)(2)

idea/testData/refactoring/rename/renameInvoke/after/invoke.kt

@@ -4,5 +4,5 @@ class A(val n: Int) {
 
 fun test() {
     A(1).foo(2)
-    A(1).foo(2)
+    A(1)(2)
 }