[Analytics Audit] Add missing share events

[danielebogo]

📘 Part of: #2628

Fixes #2678

This PR adds the missing events for the Sharing action:

- share_screen_navigation_button_tapped
- share_screen_edit_button_tapped
- share_screen_close_button_tapped

To test

• Run the app with the track log on
• Play an episode and tap Share -> Clip
• Tap on Next: confirm it tracks 🔵 Tracked: share_screen_navigation_button_tapped
• Tap on Edit: confirm it tracks 🔵 Tracked: share_screen_edit_button_tapped
• Tap on the close button (top right): confirm it tracks 🔵 Tracked: share_screen_close_button_tapped

Checklist

• I have considered if this change warrants user-facing release notes and have added them to CHANGELOG.md if necessary.
• I have considered adding unit tests for my changes.
• I have updated (or requested that someone edit) the spreadsheet to reflect any new or changed analytics.

[dangermattic]

	2 Warnings
⚠️	View files have been modified, but no screenshot or video is included in the pull request. Consider adding some for clarity.
⚠️	This PR is assigned to the milestone 7.81 ❄️. The due date for this milestone has already passed. Please assign it to a milestone with a later deadline or check whether the release for this milestone has already been finished.

Generated by 🚫 Danger

[SergioEstevao]

Confirmed that the new events are being tracked.