fixes #28236, generic methods should not cause warnings in Dart 1

tests/isolate/isolate.status

 # Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 # for details. All rights reserved. Use of this source code is governed by a
 # BSD-style license that can be found in the LICENSE file.
 
 [ $runtime == vm || $runtime == dart_precompiled ]
 browser/*: SkipByDesign  # Browser specific tests
 isolate_stress_test: Skip # Issue 12588: Uses dart:html. This should be able to pass when we have wrapper-less tests.
 
 [ $runtime != vm || $mode == product || $compiler == app_jit ]
 checked_test: Skip # Unsupported.
@@ skipping 142 matching lines @@
 pause_test: RuntimeError, OK  # Uses Isolate.spawn.
 simple_message_test/none: RuntimeError, OK  # Uses Isolate.spawn.
 start_paused_test: RuntimeError, OK  # Uses Isolate.spawn.
 message3_test/int32x4: RuntimeError, OK  # Uses Isolate.spawn.
 browser/package_*: Skip # Issue 25594 (missing implementation in Dartium).
 
 [ $compiler == dart2analyzer ]
 browser/typed_data_message_test: StaticWarning
 mint_maker_test: StaticWarning
 
-# Issue #28236
-browser/compute_this_script_browser_test: StaticWarning
-browser/package_resolve_browser_hook2_test: StaticWarning
-browser/package_resolve_browser_hook_test: StaticWarning
-browser/package_resolve_browser_test: StaticWarning
-count_test: StaticWarning
-cross_isolate_message_test: StaticWarning
-deferred_in_isolate2_test: StaticWarning
-illegal_msg_function_test: StaticWarning
-illegal_msg_mirror_test: StaticWarning
-isolate_complex_messages_test: StaticWarning
-mandel_isolate_test: StaticWarning
-message2_test: StaticWarning
-message_test: StaticWarning
-nested_spawn2_test: StaticWarning
-nested_spawn_test: StaticWarning
-raw_port_test: StaticWarning
-request_reply_test: StaticWarning
-spawn_function_custom_class_test: StaticWarning
-spawn_function_test: StaticWarning
-spawn_uri_multi_test/01: StaticWarning
-spawn_uri_multi_test/none: StaticWarning
-spawn_uri_nested_vm_test: StaticWarning
-spawn_uri_test: StaticWarning
-spawn_uri_vm_test: StaticWarning
-stacktrace_message_test: StaticWarning
-static_function_test: StaticWarning
-timer_isolate_test: StaticWarning
-unresolved_ports_test: StaticWarning
-
-
 [ $compiler == none && $runtime == vm ]
 scenarios/short_package/short_package_test: Fail, OK  # We do not plan to support the tested behavior anyway.
 
 [ $compiler != none || $runtime != vm ]
 package_root_test: SkipByDesign  # Uses Isolate.packageRoot
 package_config_test: SkipByDesign  # Uses Isolate.packageConfig
 package_resolve_test: SkipByDesign  # Uses Isolate.resolvePackageUri
 spawn_uri_fail_test: SkipByDesign  # Uses dart:io.
 scenarios/*: SkipByDesign  # Use automatic package resolution, spawnFunction and .dart URIs.
 
@@ skipping 57 matching lines @@
 [ $mode == product ]
 issue_24243_parent_isolate_test: Skip # Requires checked mode
 
 [ $hot_reload || $hot_reload_rollback ]
 function_send_test: Pass, Fail # Closure identity
 message3_test/fun: Pass, Fail # Closure identity
 deferred_in_isolate_test: Crash # Requires deferred libraries
 deferred_in_isolate2_test: Crash # Requires deferred libraries
 issue_21398_parent_isolate2_test: Crash # Requires deferred libraries
 spawn_uri_nested_vm_test: Pass, Crash # Issue 28192