[FIR] Implement ILLEGAL_SELECTOR

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

@@ -1,29 +0,0 @@
-// !DIAGNOSTICS: -UNUSED_VARIABLE
-
-fun foo(x: Any) {
-    x.<!SYNTAX!><!>
-    val foo = 1
-
-    x.<!SYNTAX!><!>
-    fun bar() = 2
-
-    x.
-    fun String.() = 3
-
-    var a = 24.<!SYNTAX!><!>
-    var b = 42.0
-}
-
-class A {
-    val z = "a".<!SYNTAX!><!>
-    val x = 4
-
-    val y = "b".<!SYNTAX!><!>
-    fun baz() = 5
-
-    val q = "c".
-    fun String.() = 6
-
-    var a = 24.<!SYNTAX!><!>
-    var b = 42.0
-}

compiler/testData/diagnostics/tests/incompleteCode/diagnosticWithSyntaxError/declarationAfterDotSelectorExpected.kt

@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 // !DIAGNOSTICS: -UNUSED_VARIABLE
 
 fun foo(x: Any) {

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

@@ -1,8 +1,8 @@
 // !DIAGNOSTICS: -UNUSED_EXPRESSION
 
 fun test() {
-    "a"."b"::<!UNRESOLVED_REFERENCE!>foo<!>
-    "a"."b"::class
-    "a"."b"."c"::<!UNRESOLVED_REFERENCE!>foo<!>
-    "a"."b"."c"::class
+    "a".<!ILLEGAL_SELECTOR!>"b"<!>::<!UNRESOLVED_REFERENCE!>foo<!>
+    "a".<!ILLEGAL_SELECTOR!>"b"<!>::class
+    "a"."b".<!ILLEGAL_SELECTOR!>"c"<!>::<!UNRESOLVED_REFERENCE!>foo<!>
+    "a"."b".<!ILLEGAL_SELECTOR!>"c"<!>::class
 }