[iOS/iPadOS] Remove unnecessary top padding from the keyboard toolbar #16206

Bug Description

There is a noticeable empty space above the first row of buttons in the keyboard toolbar (Ctrl, Alt, Shift, etc.), as highlighted in red in the attached screenshot.

This padding takes up valuable vertical space during remote desktop sessions. With the on-screen keyboard open, the remaining space for viewing and interacting with the remote desktop is already very limited.

How to Reproduce

1. Open RustDesk on an iPhone and connect to a remote computer.
2. Open the on-screen keyboard and the keyboard toolbar.
3. Observe the empty space above the first row of toolbar buttons, as highlighted in the screenshot.

Expected Behavior

Please make these two improvements on iOS and iPadOS:

1. Remove the unnecessary top padding above the keyboard toolbar buttons.
2. Add an option to completely hide the shortcut toolbar while keeping the on-screen keyboard open, with an easy way to show the toolbar again when needed.

We do not need keyboard shortcuts all the time. Vertical space is already very limited when the on-screen keyboard is open, so being able to hide the entire toolbar would leave more room for the remote desktop and improve productivity.

Operating system(s) on local (controlling) side and remote (controlled) side

iOS 26.6.2 and iPadOS 18.7.8

RustDesk Version(s) on local (controlling) side and remote (controlled) side

1.4.9

Screenshots

Additional Context

The attached screenshot shows the issue on an iPhone. Please also review the equivalent toolbar layout on iPadOS so that both platforms make efficient use of the available vertical space.