Extend user session during widget changed event

[avazirna]

Summary

This PR implements a mechanism for CommCare to extend the user session when the current widget data can't be recovered in case of session expiration. This extension is basically to prevent the user session from expiring which automatically logs the user out. This implementation entails:

1. Introduces the concept of non recoverable Widget - to indicate that in case the session expires while the widget is in use, any data captured will be lost
2. Extends the scope of the widgetEntryChanged event to extend the user session if needed
3. Makes the CommCareAudioWidget to fire widgetEntryChanged events during recording start;

The above mentioned widget is the main motivation behind this change. Recently, a project that makes use of the CommCareAudioWidget to capture long audio recordings reported that users were being unexpectedly logged out in the middle of the recordings and losing data, this was later associated to the session expiring in the middle of an active recording. More information on this ticket.

Safety Assurance

• I have confidence that this PR will not introduce a regression for the reasons below
• Do we need to enhance manual QA test coverage ? If yes, "QA Note" label is set correctly

Safety story

This only adds more time to the current session. Local tests were successfully.

[avazirna]

@damagatchi retest this please