Hyprland - Border Opacity override & extend_border_grab_area override

### Feature Description

Turns out if I make the Border Size in Hyprland 0px, I'm unable to click and drag to resize windows. The fix is either giving borders a size and making it possible for them to be transparent, or, also adding the extend_border_grab_area override. That'd be a great addition. Thanks!

### Use Case

_No response_

### Compositor(s)

Hyprland

### If Other, please specify

_No response_

### Proposed Solution

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### Alternatives/Existing Solutions

_No response_

The issue names Hyprland but no files, tests, or entry points. Start by tracing how Hyprland-specific border settings and compositor overrides are represented, then verify the behavior with a zero-pixel border. Done means window resizing remains draggable while border opacity can be overridden and extend_border_grab_area is supported.

Written by the indexing model from the issue text.