MS-593 Camera permission revokation fix

[luhmirin-s]

• The app process is silently restarted when revoking permission in settings without calling onCleared() or any other indication within the view model.
• This causes the VM recreation when navigating back to SID. Since the onCleared() has not been called there is nothing in the steps cache and the flow is forcibly closed on the next handleResult()/doOnNextStep() call.
• The only way to be sure that the step cache is being preserved is to save the steps each time the flow proceeds to the next step or returns the final result.
• Since the step list is always relatively short (less than 10 items) parsing to/from JSON should take a negligible amount of time. This could also make the cache and state restoration more consistent in other scenarios that involve navigating away from SID mid-flow.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
100.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud