* fix(ClipboardHistory): toggle button now toggles between saved and recents tabs
- Change tooltip text to reflect current tab state ('Recent' when on saved tab, 'Saved' when on recents tab)
- Previously always switched to saved tab; now toggles between 'saved' and 'recents'
* refactor(ClipboardHistory): remove redundant History button, keep single toggle button
The Saved button now toggles between saved/recents tabs, so the separate History
button is redundant and has been removed for a cleaner UI.