fix: maximize/unmaximize firing on linux

[codebytere]

Description of Change

Closes #28699.

Fixes an issue where the 'maximize' and 'unmaximize' events didn't fire properly on linux.

This was happening as a result of changes made in #27280 to address CL:2577887 and CL:2585750. In the resultant change, we assigned was_maximized_ at the top of WindowStateWatcher::OnEvent - given that this was being called in the function after the event had taken place, the previous value would match the current value using this logic and thus it would never be the case that is_minimized != was_minimized_ or is_maximized != was_maximized_ and thus the events would never fire.

Fix this by assigning was_minimized_ and was_maximized_ in places that properly allow the change to be reflected.

Tested with https://gist.github.com/Jelmerro/5a5a8b0cfcf69a24993b47bd7526d242

cc @dsanders11 since this should allow you to better test #32438

Checklist

• PR description included and stakeholders cc'd
• npm test passes
• PR release notes describe the change in a way relevant to app developers, and are capitalized, punctuated, and past tense.

Release Notes

Notes: Fixed an issue where the 'maximize' and 'unmaximize' events didn't fire properly on linux.

[release-clerk]

Release Notes Persisted

Fixed an issue where the 'maximize' and 'unmaximize' events didn't fire properly on linux.

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I was unable to backport this PR to "14-x-y" cleanly;
you will need to perform this backport manually.

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I was unable to backport this PR to "15-x-y" cleanly;
you will need to perform this backport manually.

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I was unable to backport this PR to "16-x-y" cleanly;
you will need to perform this backport manually.

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I have automatically backported this PR to "17-x-y", please check out #32492

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@codebytere has manually backported this PR to "16-x-y", please check out #32497

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@codebytere has manually backported this PR to "15-x-y", please check out #32498

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@codebytere has manually backported this PR to "14-x-y", please check out #32499