The issue of setting high-definition images in godot controls on mobile devices

### Tested versions

4.2

### System information

macos 14.2.1 (23C71)

### Issue description

In the iOS project, after using the colorPicker.add_theme_icon_override("picker_cursor",grabber_icon_texture) method to replace high-definition @ 3x images, the Godot control was unable to shrink the image, resulting in the control becoming larger.

All controls have this issue, such as HSlider(grabber), LineEdit(clear), ColorPicket(picker_cursor), etc


### Steps to reproduce

null

### Minimal reproduction project (MRP)

null

Start with the reported colorPicker.add_theme_icon_override("picker_cursor", grabber_icon_texture) call and investigate the image sizing behavior across HSlider grabber, LineEdit clear, and ColorPicker picker_cursor controls. There is no reproduction project or named test in the issue; done means high-definition replacement images retain the intended control dimensions on iOS.

Written by the indexing model from the issue text.