[BUGFIX] Add id to confirmation finisher template

Releases: master, 9.5
Resolves: #87198
Change-Id: I91b8b2f0d161ef89ba4896b063685ef2e2c8544d
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/60588


Tested-by: Mathias Brodala <mbrodala@pagemachine.de>
Tested-by: TYPO3com <noreply@typo3.com>
Tested-by: Ralf Zimmermann <ralf.zimmermann@tritum.de>
Reviewed-by: Mathias Brodala <mbrodala@pagemachine.de>
Reviewed-by: Ralf Zimmermann <ralf.zimmermann@tritum.de>