Update VM service to new isolate API

tests/standalone/standalone.status

Index: tests/standalone/standalone.status
diff --git a/tests/standalone/standalone.status b/tests/standalone/standalone.status
index 0b2316a9b01b34b4ea0e7d917278f4d7cb2e8da7..cc9d1e4e03201481e0632512672e2786b78e8d94 100644
--- a/tests/standalone/standalone.status
+++ b/tests/standalone/standalone.status
@@ -15,20 +15,6 @@ io/platform_test: Pass, Fail # Issue 14399
 
 [ $runtime == vm ]
 package/package_isolate_test: Fail # Issue 12474
-vmservice/isolate_bad_class_test: Skip # Issue 14448
-vmservice/isolate_bad_object_test: Skip # Issue 14448
-vmservice/isolate_class_field_test: Skip # Issue 14448
-vmservice/isolate_class_test: Skip # Issue 14448
-vmservice/isolate_code_test: Skip # Issue 14448
-vmservice/isolate_echo_test: Skip # Issue 14448
-vmservice/isolate_function_test: Skip # Issue 14448
-vmservice/isolate_library_test: Skip # Issue 14448
-vmservice/isolate_list_test: Skip # Issue 14448
-vmservice/isolate_stacktrace_command_test: Skip # Issue 14448
-vmservice/multiple_isolate_list_test: Skip # Issue 14448
-vmservice/unknown_command_test: Skip # Issue 14448
-vmservice/unknown_isolate_command_test: Skip # Issue 14448
-
 
 [ $runtime == vm && $checked ]
 # These tests have type errors on purpose.