[BUGFIX] EXT:form - fix missing id attribute

Insert missing id attribute for image and file upload element.

Resolves: #82223
Releases: master, 8.7
Change-Id: Ia88cda2db1eda1ce6dab0678052e089184d8b0cd
Reviewed-on: https://review.typo3.org/53959


Reviewed-by: Bjoern Jacob <bjoern.jacob@tritum.de>
Tested-by: Bjoern Jacob <bjoern.jacob@tritum.de>
Reviewed-by: Daniel Lorenz <daniel.lorenz@extco.de>
Tested-by: Daniel Lorenz <daniel.lorenz@extco.de>
Tested-by: TYPO3com <no-reply@typo3.com>
Reviewed-by: Susanne Moog <susanne.moog@typo3.org>
Tested-by: Susanne Moog <susanne.moog@typo3.org>