[SR5] Fix footer resizing issue

[PureWeen]

Description of Change

This is an alternate fix to #28971

The first commit is just reverrting the above PR
e9a1bb2

The second commit is the actual fix
e9a1bb2

I realize the screenshots for the centering of the header/footer are different here on android vs iOS
But we already have an issue for that
#27738

Issues Fixed

Fixes #29051

[Copilot]

Copilot reviewed 5 out of 5 changed files in this pull request and generated no comments.

Comments suppressed due to low confidence (4)

src/Controls/src/Core/Handlers/Items/iOS/StructuredItemsViewController.cs:241

• The commented-out condition for the header view frame update may cause unnecessary updates or performance issues. Consider restoring the condition or refactoring it to only update when the frame values have actually changed.

if (_headerUIView != null/* && (_headerUIView.Frame.Y != -headerHeight || _headerUIView.Frame.Width != CollectionView.Frame.Width)*/)

src/Controls/src/Core/Handlers/Items/iOS/StructuredItemsViewController.cs:253

• The commented condition for the footer view frame update removes a check that might prevent invalid layout recalculations. Ensure that the new logic still correctly handles footer positioning without causing layout glitches.

if (_footerUIView != null/* && (_footerUIView.Frame.Y != height || emptyHeight > 0 || _footerUIView.Frame.Height != footerHeight || _footerUIView.Frame.Width != CollectionView.Frame.Width)*/)

src/Controls/src/Core/Handlers/Items/iOS/MauiCollectionView.cs:30

• Reversing the condition from 'if (isPropagating)' to 'if (!isPropagating)' changes the invalidation behavior, which could lead to missed or extra layout updates. Verify that this change is intentional and that it does not negatively impact cell layout updates.

if (!isPropagating)

src/Controls/src/Core/Handlers/Items/iOS/ItemsViewController.cs:199

• Removing the block that resets the 'NeedsCellLayout' flag in ViewWillLayoutSubviews may alter the timing of layout updates. Confirm that this removal is valid and that no side effects occur in the layout behavior on iOS.

if (CollectionView is Items.MauiCollectionView { NeedsCellLayout: true } collectionView)

[tj-devel709]

Also passes the original issue. After the CreateDefaultMainPage is changed back, it looks good to me

[PureWeen]

This path here is the only interesting part of this PR

The rest of this PR is just reverting a PR that didn't fix the intended issue correctly