Root cause: Some OEMs can not provide valid intent for help & feedback
Solution: Check the intent is vaild before show up the help strings
Bug: 197786797
Test: make RunSettingsRoboTests ROBOTEST_FILTER=AccessibilityFooterPreferenceControllerTest
Change-Id: I8103730ed48a343f7b72c16647f7e8047aee34b2
Goal: Improve readability which is a bit difficult because of string concatenation for accurate translation.
Root cause: In some locales, framework features name would be a word rather than a product name. Hence it need to be in the different position in a sentence.
Solution: Use whole sentence to translate instead of concatenating the string could solve this issue.
Bug: 185478543
Test: make RunSettingsRoboTests ROBOTEST_FILTER=AccessibilityFooterPreferenceControllerTest
Change-Id: Id198805329be9c773df87f38a074ae956e4d0cdb