What happened?

When editing a message, the user is shown a warning dialog. Currently, this dialog appears every time a message is edited, even if the user has already seen it in the current session. This creates a frustrating user experience when editing multiple messages.

Expected behavior

The warning dialog should only appear the first time a user edits a message in a session. Subsequent edits should not show the dialog again until the VS Code window is reloaded.

Steps to reproduce

1. Edit a message by clicking the edit button
2. Confirm the warning dialog and make your edit
3. Edit another message
4. Notice that the warning dialog appears again, even though you've already seen it

Additional context

The warning dialog is important for first-time edits, but becomes redundant and frustrating when editing multiple messages in the same session.