Diagnostics improvements for corner cases

(class/package qualifier in non-qualifier position).

compiler/testData/diagnostics/tests/SafeCallOnFakePackage.kt

@@ -10,7 +10,7 @@ val s: String = "test"
 
 // FILE: test.kt
 fun ff() {
-    val a = <!FUNCTION_CALL_EXPECTED!>Test<!>?.<!UNRESOLVED_REFERENCE!>FOO<!>
+    val a = <!NO_COMPANION_OBJECT!>Test<!><!UNEXPECTED_SAFE_CALL!>?.<!>FOO
     val b = <!EXPRESSION_EXPECTED_PACKAGE_FOUND!>foo<!><!UNEXPECTED_SAFE_CALL!>?.<!>s
-    <!INVISIBLE_MEMBER, FUNCTION_CALL_EXPECTED!>System<!>?.<!UNRESOLVED_REFERENCE!>out<!>.<!DEBUG_INFO_ELEMENT_WITH_ERROR_TYPE!>println<!>(<!DEBUG_INFO_ELEMENT_WITH_ERROR_TYPE!>a<!> <!DEBUG_INFO_ELEMENT_WITH_ERROR_TYPE!>+<!> b)
+    <!NO_COMPANION_OBJECT!>System<!><!UNEXPECTED_SAFE_CALL!>?.<!>out.println(a + b)
 }