fix: recalculate grid span count after rotation

[himu-gupta]

Summary

• Recalculate the file-list grid span count after configuration changes.
• Keep the fragment's selected view type in sync when toggling between list and grid.
• Invalidate staggered-grid span assignments and request a relayout after the mode/orientation update.
• Add an unreleased changelog entry.

Fixes #4884

Verification

• JAVA_HOME="/Applications/Android Studio.app/Contents/jbr/Contents/Home" ANDROID_HOME="/Users/himu/Library/Android/sdk" ./gradlew --no-daemon --console=plain :owncloudApp:compileOriginalDebugKotlin
• git diff --check

[CLAassistant]

All committers have signed the CLA.

[joragua]

Hi @himu-gupta! Thanks for opening this PR! 🙌🏻

Some improvements here before the CR:

1. Do not to forget to use Conventional commits for the message
2. Commits must be GPG/PGP signed, and it'd be great if each commit include a Signed-off-by line
3. I'd separate the calens into a different commit with the message: chore: add calens file

Let us know if you have any doubts and we will help you! I will start with the code review when all changes are done 🍻

[himu-gupta]

Hi @himu-gupta! Thanks for opening this PR! 🙌🏻

Some improvements here before the CR:

1. Do not to forget to use Conventional commits for the message
2. Commits must be GPG/PGP signed, and it'd be great if each commit include a Signed-off-by line
3. I'd separate the calens into a different commit with the message: chore: add calens file

Let us know if you have any doubts and we will help you! I will start with the code review when all changes are done 🍻

Thanks @joragua, I have done the requested changes.

[jesmrec]

Thanks for your contribution @himu-gupta!! Let me tell you how the process is. Basically, there are two phases after the PR is correct (signed commits, separated changelog, conventional commits correct...):

1. Code review: team will review the code you pushed and make suggestions for improvement. Usually, @joragua takes care of it.

2. QA: Once code review is approved, the feature/fix will be tested to detect defects or unexpected behaviors. I will take care of that.

For sure, all CI checks must be green as well, otherwise merging will be blocked.

Code review will start soon, keep tuned!!

[himu-gupta]

Thanks for your contribution @himu-gupta!! Let me tell you how the process is. Basically, there are two phases after the PR is correct (signed commits, separated changelog, conventional commits correct...):

1. Code review: team will review the code you pushed and make suggestions for improvement. Usually, @joragua takes care of it.
2. QA: Once code review is approved, the feature/fix will be tested to detect defects or unexpected behaviors. I will take care of that.

For sure, all CI checks must be green as well, otherwise merging will be blocked.

Code review will start soon, keep tuned!!

Thanks for the insight

[himu-gupta]

@joragua is anything pending from my end?

[joragua]

I'll take care of it as soon as possible and I'll ping you once the CR is ready! Stay tuned! 🙌🏻 @himu-gupta

[joragua]

CR finished! 🚀 Some comments here @himu-gupta

[himu-gupta]

Thanks @joragua, addressed the CR in two new commits on top without force-pushing:

• afe11e5 updates the calens file name/content to match the template and adds the PR link.
• 8f8534b removes the extra initialization guards and the explicit invalidateSpanAssignments() / requestLayout() calls, relying on notifyItemRangeChanged() for the refresh.

[joragua]

Just two easy comments and it's ready! Thanks for your patience @himu-gupta!

Would it be possible to squash the two commits about calens into a single one? We use to have only one commit for the calens entry in each PR. Also, I'd rename the last commit to make it more descriptive. The idea would be to have only three commits in this PR:

1. fix: recalculate grid span count after rotation
2. chore: add calens file
3. refactor: remove unnecessary grid recalculation logic

[joragua]

I'd re-write the description like this:

Suggested change

	The grid mode column count has been recalculated after device rotation, keeping
	file tiles in the correct layout for the new orientation.
	The grid mode column count has been recalculated after device rotation, keeping
	file layouts aligned with the new orientation.