Fix that device isn't responding for a while when resetting all settings on...

Fix that device isn't responding for a while when resetting all settings on “Display size and text” page.

Goal:
Probably has the race condition issue between "Bold text" and  the other features including "Display Size", “Font Size” if they would be enabled at the same time, so our workaround is that the “Bold text” would be reset first and then do the remaining to avoid flickering problem.

Bug: 223747686
Bug: 220082104
Bug: 220070773
Test: make RunSettingsRoboTests ROBOTEST_FILTER=TextReadingPreferenceFragmentTest
Change-Id: If1425fe2579bec8dded69680ac73fbfb03c37321