KT-8794 Parameter Information should work in index expression

#KT-8794 Fixed

idea/testData/parameterInfo/arrayAccess/Simple.kt

@@ -0,0 +1,9 @@
+class C {
+    operator fun get(pInt: Int, pString: String){}
+}
+
+fun foo(c: C) {
+    c[<caret>]
+}
+
+//Text: (<highlight>pInt: Int</highlight>, pString: String), Disabled: false, Strikeout: false, Green: true