[Mail] use layout api for find window

[diver]

Currently, it doesn't scale well with 20pt. font size.

[Janus]

Find is different from other applications, it would be nice to use the same behavior of StyledEdit.

1. There are no replace and find selection menu.
2. There are no option case-sensitive/loop around etc...
3. In StyledEdit there is a find window for each StyledEditWindow in Mail there is only one window for all the MailWindow.

I think it is important for the user to have a consistent experience.

Any thoughts?

[diver]

Sounds good. Terminal Find should be changed as well. Ideally, it would use Web+ find bar to avoid modal windows.

[Janus]

Before

After

There is only one problem the ALT-T for "Replace next" collide with "Remove enclosure" command any suggestion?

[pulkomandy]

​https://review.haiku-os.org/c/haiku/+/2629

Only conversion to layout kit, I did not implement Janus' proposal.

[waddlesplash]

Fixed in hrev54169.

[nielx]

Assign tickets with status=closed and resolution=fixed within the R1/beta2 development window to the R1/beta2 Milestone