Ignore 'dynamic' in the navigation computer.

pkg/analysis_server/test/analysis_notification_navigation_test.dart

Index: pkg/analysis_server/test/analysis_notification_navigation_test.dart
diff --git a/pkg/analysis_server/test/analysis_notification_navigation_test.dart b/pkg/analysis_server/test/analysis_notification_navigation_test.dart
index ffc041eebe56152591651a0f607a72fdc751e0f3..cb216a1a86b1e84ace40039e5f258f1d807ce085 100644
--- a/pkg/analysis_server/test/analysis_notification_navigation_test.dart
+++ b/pkg/analysis_server/test/analysis_notification_navigation_test.dart
@@ -263,6 +263,17 @@ main() {
     });
   }
 
+  test_dynamic() {
+    addTestFile('''
+main() {
+  dynamic v = null;
+}
+''');
+    return prepareNavigation().then((_) {
+      assertNoRegionAt('dynamic');
+    });
+  }
+
   test_identifier_unresolved() {
     addTestFile('''
 main() {