[Feature Request/Accessibility] Ability to lock toolbars to prevent accidental rearrangement

### Description

I can't find a way to lock the toolbars to prevent accidental rearrangement. Is anyone aware of where this is or does it need to be implemented?

### Use case/motivation

Add a checkbox to enable/disable toolbar locking to help prevent accidental mis-clicking from undoing layouts, saving time from having to fix the interface.

### Related issues

_No response_

### Are you willing to submit a pull request?

No

No file or test is identified in the issue. Start by locating NetBeans' toolbar configuration or preferences entry point, then verify that a checkbox can enable or disable toolbar locking and that locked toolbars cannot be accidentally rearranged.

Written by the indexing model from the issue text.