Version

4.12.0

Describe the bug

About the custom activity editor introduced in this PR, if you close and reopen the dialog it visually saves the text that was entered, but if you send the event without changing the event data it will send the placeholder "Hello world!" event

To Reproduce

Steps to reproduce the behavior:

1. Open custom event editor, notice the "hello world" event placeholder
2. Modify the event message to say "Hello to you too!"
3. Send the event
4. Close the dialog
5. Reopen the dialog, notice that it retains your modified event
6. Send the event without modifying anything, notice that the event that actually sends is the "hello world!" placeholder

Expected behavior

The event sent in the custom event editor should match the text in the editor when the dialog is reopened after making changes.

Screenshots

Full repro steps:

Additional context

[bug]