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/checkArguments/arrayAccessSet.fir.kt

@@ -31,5 +31,5 @@ fun test() {
     D[0] = ""
     D[0] = 2.72
 
-    <!INAPPLICABLE_CANDIDATE!>Z[0] = ""<!>
+    <!INAPPLICABLE_CANDIDATE!>Z[0]<!> = ""
 }