improve keyword suggestions - fixes #24016

pkg/analysis_server/test/completion_test.dart

Index: pkg/analysis_server/test/completion_test.dart
diff --git a/pkg/analysis_server/test/completion_test.dart b/pkg/analysis_server/test/completion_test.dart
index a469f1a113a6b1408582d7050d2008e0727b45ce..0cebf2f58562cbef48bcf6d445cd6252a060c286 100644
--- a/pkg/analysis_server/test/completion_test.dart
+++ b/pkg/analysis_server/test/completion_test.dart
@@ -1601,8 +1601,7 @@ main(p) {
           "3-v1",
           "4+is",
           "4-isVariable"
-        ],
-        failingTests: '4');
+        ]);
 
     buildTests(
         'testCompletion_is_asIdentifierStart',
@@ -1645,8 +1644,7 @@ main(p) {
   var isVariable;
   var v = p is!1
 }''',
-        <String>["1+is", "1-isVariable"],
-        failingTests: '1');
+        <String>["1+is", "1-isVariable"]);
 
     buildTests(
         'testCompletion_keyword_in',
@@ -2637,7 +2635,7 @@ class Q {
           "K+else",
           "L+return"
         ],
-        failingTests: '3BCHK');
+        failingTests: '3BCK');
 
     // operators in function
     buildTests('test015', '''f(a,b,c) => a + b * c !1;''', <String>["1+=="],