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02ff040b74
Closes #7947
## Problem
`Visuals::interact_cursor` stopped working for buttons after the
`AtomLayout` refactor in commit 6eb7bb6e. Setting `interact_cursor` to
e.g. `CursorIcon::PointingHand` no longer changes the cursor when
hovering over a `Button`.
## Root Cause
When `Button` was rewritten to use `AtomLayout` in #5830, the
cursor-override block at the end of the old `Button::ui` was not carried
over to the new `Button::atom_ui` method.
The old code had:
```rust
if let Some(cursor) = ui.visuals().interact_cursor {
if response.hovered() {
ui.ctx().set_cursor_icon(cursor);
}
}
```
This was the only place `interact_cursor` was checked, so the setting
became entirely non-functional.
## Fix
Re-add the same `interact_cursor` check in `Button::atom_ui`, right
after painting and before `widget_info`, matching the original behavior.
---------
Co-authored-by: easonysliu <easonysliu@tencent.com>
Co-authored-by: Emil Ernerfeldt <emil.ernerfeldt@gmail.com>