Handle notification permission on Wear

[jpelgrom]

Summary

To prepare for the API 33 targeting of Wear (#4500), add handling around the notification permission to the Wear app. This should only apply to watch notifications, not bridged notifications*, but it is nice to have if possible so:

• Ask for notification permission immediately after completing onboarding (Android 13+ only)
• Add a settings item to open the watch settings to grant permission (any Android version)

Screenshots

Permission prompt after logging in	Settings item if notifications are disabled for the app	Tapping the setting open the system notifications settings**

Link to pull request in Documentation repository

n/a

Any other notes

* At least that's what Google says, but then you have Samsung making it impossible to change one without the other in their companion app 🤷
** Fun fact: while I can find this in settings app on the emulator, I actually can't find it on my Samsung watch

[dshokouhi]

Hopefully we dont have to make it clear this is for watch notifications only and not bridged :) Not sure why Samsung decided to hide the option, seems silly but maybe they did it for simplicity?