fix(user-feedback): Fix user feedback page hostname (#14628)
fix(user-feedback): Fix user feedback page hostname (#14628)

This reverts commit a55f211d875234c059c1fb42fb6cf7bb74cff2b4,
fixes #13970, retries #14429.

Tested locally with a full installation and got the following:
`var endpoint =
/**/"http://localhost:9000/api/embed/error-page/?dsn=http://1adad07c9e504cea91017c04f88a51a0@localhost:9000/1&eventId=1636edda23414a0a8a5d7c8d05d7db2e";/**/'';`
beeftornado/sentry,mvaled/sentry,beeftornado/sentry,mvaled/sentry,beeftornado/sentry,mvaled/sentry,mvaled/sentry,mvaled/sentry,mvaled/sentry