Added delete button to saved replies rows

What does this MR do and why?

Adds a delete button to each saved reply row.

Screenshots or screen recordings

Screen_Recording_2023-02-09_at_16.39.18

How to set up and validate locally

• Enable the saved_replies feature flag (Feature.enable(:saved_replies))
• Visit /-/profile/saved_replies
• Create new saved reply in the form
• Delete the saved reply

MR acceptance checklist

This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.

• I have evaluated the MR acceptance checklist for this MR.