Add smart auto stop indicator to Quick Settings Tile

[songchenwen]

Add visual indicator on the tile icon when VPN is stopped by smart auto stop feature. This allows users to easily identify the smart stopped state directly from the control center.

• Add ic_tile_smart_stopped.xml drawable with a dot indicator
• Add night mode variant for dark theme support
• Update BettboxTileService to switch icon based on isSmartStopped state

[appshubcc]

I remember this being buggy on most Chinese Android brands Has it been tested on those?

[songchenwen]

No. I only tested this on my vivo phone. Could you test this in your TG group? If there's too many compitable issues, we can remove this feature, or add a switch for it. Anyway this is only a display enhancement, not any thing important.

[appshubcc]

I'm worried this feature could be a bit problematic, some customOS are known to cache the icons, and they only update after a reboot

[songchenwen]

Yeah, if that's the case, there must be too many feedbacks. But at least I think FairEmail, which is a popular open source email client, is doing this.

Instead of simply deleting this feature, which solution do you think is better?

1. Add a switch for it and disable it by default. Add a note under the switch to let the user confirm that his rom can handle dynamic tile icons.
2. Change the tile subtitle instead. CMFA does this, but of course this will lose the subtle elegantness of the icon changing method, LOL.

[songchenwen]

But I think you are worried too much about this. A cached icon won't do much harm. If there is no switch for it, users can hardly notice this. In fact nearly every rom has a tile called portait lock, which often has 2 different icons for locked and unlocked states. If portrait lock is doing well, I think we'll be fine too. Because we are also only changing icon when changing state. Of course some test will be good. Just don't worry too much. This won't cause any service degradation.

[appshubcc]

OK，I'll give it a try later