User Feedback Widget: Don't delete feedback if widget gets closed

### Problem Statement

We can click outside the widget accidently at times. CLosing the widget.
In such cases, don't delete the content of the widget.

### Solution Brainstorm

We had a different thought before:

https://github.com/getsentry/sentry-javascript/commit/f9a040a83038b1063eaacda2774139b341ffecbf
https://github.com/getsentry/sentry-javascript/commit/841d57cfc3b313649fecf40e64454e17e6340410
https://github.com/getsentry/sentry-javascript/commit/7be412cfd765de38705a2d98ea6a7c6f38d93f28

But now came to agreement that not losing the text is more valuable