[camera_platform_interface] Add rgba8888 format to ImageFormatGroup

[Mairramer]

Part of #11632

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Code Review

This pull request adds the rgba8888 format to the ImageFormatGroup enum and implements platform-specific mappings for Android and iOS. Review feedback recommends adding unit tests to verify the conversion of platform-specific integer values and updating documentation links for consistency with existing code.

[bparrishMines]

LGTM

@stuartmorgan-g or @tarrinneal for secondary review

[stuartmorgan-g]

The addition looks good, but the two switch analyzer errors will need temporary // ignores, which the follow-up PR should clean up.

[Mairramer]

The addition looks good, but the two switch analyzer errors will need temporary // ignores, which the follow-up PR should clean up.

Done.

[stuartmorgan-g]

You added case handling, not ignores. That will fail our safety check against modifying code across dependency layers in a federated plugin.

You need to ignore the warning in this PR, and add the cases in the next PR.

[Mairramer]

You added case handling, not ignores. That will fail our safety check against modifying code across dependency layers in a federated plugin.

You need to ignore the warning in this PR, and add the cases in the next PR.

Yes, I messed up. I'll fix it right away.

[Mairramer]

@stuartmorgan-g I believe it should pass now, hopefully.

[stuartmorgan-g]

I'm very confused by the compile error here; I thought this was only an analyzer warning as long as it wasn't a switch expression (e.g., return switch ...). Did the behavior change?

[stuartmorgan-g]

Wow, apparently it changed several years ago for enums and we hadn't hit it until now.

So there will need to be a prequel PR to change all of those constructions to use default instead of the current return-outside-switch approach. Which unfortunately means that we won't get warnings about places we need to update any more, and it'll just have to be feature-test driven.

[Mairramer]

Wow, apparently it changed several years ago for enums and we hadn't hit it until now.

So there will need to be a prequel PR to change all of those constructions to use default instead of the current return-outside-switch approach. Which unfortunately means that we won't get warnings about places we need to update any more, and it'll just have to be feature-test driven.

How to proceed in this case?