FIR checker: introduce NO_(GET|SET)_METHOD

Besides introducing new diagnostics, this commit unifies source usages
for array accesses in PSI & LT.

compiler/testData/diagnostics/tests/incompleteCode/diagnosticWithSyntaxError/arrayExpression.fir.kt

@@ -4,5 +4,5 @@ package bar
 fun main() {
     class Some
 
-    Some[<!SYNTAX!><!>] <!UNRESOLVED_REFERENCE!>names<!> <!UNRESOLVED_REFERENCE!><!SYNTAX!>=<!> ["ads"]<!>
+    Some[<!SYNTAX!><!>] <!UNRESOLVED_REFERENCE!>names<!> <!SYNTAX!>=<!> <!NO_GET_METHOD!>["ads"]<!>
 }

compiler/testData/diagnostics/tests/incompleteCode/kt4866UnresolvedArrayAccess.fir.kt

@@ -1,5 +1,5 @@
 //KT-4866 Resolve does not work inside brackets with unresolved reference before
 
 fun test(i: Int, j: Int) {
-    <!UNRESOLVED_REFERENCE!><!UNRESOLVED_REFERENCE!>foo<!>[i, j]<!>
-}
+    <!UNRESOLVED_REFERENCE!>foo<!><!NO_GET_METHOD!>[i, j]<!>
+}