Un 1998 UI fixes

[Kariamos]

This pull request improves the user experience and clarity of the watcher list controls on the plan page, especially around adding and removing watchers and handling edge cases where only one watcher is present. It enhances UI feedback with new tooltips, refines empty state messaging, and updates button logic and appearance for better accessibility and guidance.

User Experience and UI Feedback Improvements:

• Added new tooltip messages and translations for watcher actions, including when the follow button is disabled, when only one watcher is present, and when removing a watcher, to provide clearer feedback to users. (src/locales/en/translation.json, src/locales/it/translation.json) [1] [2]
• Updated the watcher removal button to always show a tooltip explaining the consequences of removal, improving clarity for users. (src/pages/Plan/Controls/WatcherList/UserItem.tsx)

Empty State and Edge Case Handling:

• Refactored the empty state component to display different messages depending on whether there are zero or only one watcher, making the UI more informative in these scenarios. (src/pages/Plan/Controls/WatcherList/UserList.tsx) [1] [2] [3]

Button Logic and Accessibility:

• Improved the logic for enabling/disabling the follow/unfollow button by considering workspace access and whether the user is the last watcher, and updated icon colors for better visual feedback. (src/pages/Plan/Controls/WatcherList/WatchButton.tsx) [1] [2] [3]
• Set the watcher list modal trigger button size to "small" for visual consistency. (src/pages/Plan/Controls/WatcherList/index.tsx)

[Kariamos]

manca disabilitare il bottone follow se crei un plan da admin/csm non membro del ws

[Kariamos]

manca disabilitare il bottone follow se crei un plan da admin/csm non membro del ws

risolto