Keep ContentCapturePerUserService alive while the package is being updated.

Test: manual verification (cannot be tested using CTS because it would kill the test process)
Test: atest CtsContentCaptureServiceTestCases

Bug: 126266412
Fixes: 128466656

Change-Id: I73e89f41b58615070c38103fa2f1fa04ac015dca
2 files changed