VM: [Kernel] Fix remaining issues with kernel-based async/await implementation

tests/language/language.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.
 
 # This directory contains tests that are intended to show the
 # current state of the language.
 
+[ $compiler == none || $compiler == app_jit || $compiler == dartk || $runtime == dart_precompiled ]
+async_star_cancel_while_paused_test: RuntimeError
+# This is OK for now, but we may want to change the semantics to match the test.
+async_star_pause_test: Fail, OK
+
 [ $compiler == none || $compiler == precompiler || $compiler == app_jit ]
 # Other issues:
 generic_methods_type_expression_test: RuntimeError # Issue 25869
 
-# This is OK for now, but we may want to change the semantics to match the test.
-async_star_pause_test: Fail, OK
-
 # These tests are skipped in the VM because it has "--supermixin"
 # functionality enabled unconditionally.  The tests should be removed
 # once the same is true for analyzer (#24478) and dart2js (#23773)
 mixin_illegal_super_use_test: Skip # Issues 24478 and 23773
 mixin_illegal_superclass_test: Skip # Issues 24478 and 23773
 
 # These bugs refer currently ongoing language discussions.
 constructor5_test: Fail # Issue 6422
 constructor6_test: Fail # Issue 6422
 
@@ skipping 14 matching lines @@
 deferred_redirecting_factory_test: Fail # Issue 23408
 redirecting_constructor_initializer_test: RuntimeError # Issue 23488
 
 # Non-contractive types are not supported in the vm.
 cyclic_type_test/02: Fail, OK
 cyclic_type_test/04: Fail, OK
 cyclic_type2_test: Fail, OK
 least_upper_bound_expansive_test/*: Fail, OK
 
 async_star_regression_2238_test: CompileTimeError, RuntimeError # drt only runtime-errs.
-async_star_cancel_while_paused_test: RuntimeError
 
 # Fails because `as T` is an error rather than being treated like `as dynamic`.
 generic_methods_type_expression_test: RuntimeError # Issue 27460
 
 # Doesn't yet implement `covariant` keyword.
 covariant_test/none: CompileTimeError # Issue 28166
 covariant_override_test: CompileTimeError # Issue 28166
 
 [ ($compiler == none || $compiler == precompiler || $compiler == app_jit) && $checked ]
 # These generic functions tests pass for the wrong reason in checked mode,
@@ skipping 270 matching lines @@
 vm/optimized_stacktrace_test: Pass, Crash # Issue 28276
 
 [$compiler == dart2analyzer]
 vm/regress_27201_test: SkipByDesign # Loads bad library, so will always crash.
 config_import_corelib_test: StaticWarning, OK
 
 null_bottom_test/none: StaticWarning, CompileTimeError # Issue 28025
 null_bottom_test/01: Pass, CompileTimeError # Issue 28025
 null_bottom_test/02: Pass, CompileTimeError # Issue 28025
 null_bottom_test/03: Pass, CompileTimeError # Issue 28025