Update the share sheet to copy only the URLs

[kean]

Steps to reproduce the behavior

• Open post details in the Reader
• Tap "Share"
• Share in Messages

Expected behavior

• The new message contains a preview of the post automatically generated by the system. The preview has a title and shows part of an excerpt.

Actual behavior

• The new message contains a preview, but it also shows a title and a cut-off part of the excerpt (you see the title and the excerpt twice)

[dangermattic]

Thanks for reporting! 👍

[kean]

Review other share sheets in the app.