don't block adb while running uninstall

Test: Manual
      1. setup a work profile
      2. set a uninstall restriction on foo app for the work profile
         by calling set DevicePolicyManager.setUninstallBlocked()
      3. observe adb uninstallation can return with 'DELETE_FAILED_OWNER_BLOCKED'
         message without blocking forever by using the following command line:
         `adb uninstall --user user-id-of-work-profile com.foo`
Test: Manual
      1. install lots of apks via adb
      2. uninstall apks via adb

Change-Id: I68706782ae547250433e3dd8ff285d4932473033
Merged-In: If89978c5a79ef998bde55c254ced4b6a3ff6e645
Signed-off-by: wangmingming1 <wangmingming1@xiaomi.com>