docs: Remove reference to non-existing binding for `tab switcher: toggle all` (#45919)
There is no default binding for `{#kb tab_switcher::ToggleAll}`, so the
doc is rendered as:
<img width="1330" height="227" alt="image"
src="https://github.com/user-attachments/assets/a5ce2efd-69c4-4eb4-a28b-3fdb7825ce34"
/>
Release Notes:
- N/A
9677da9a60Haojian Wu committed on 12/31/2025, 10:59:14 PM· committed by GitHubparent9e5546e