[BUGFIX] Set semantic value to autocomplete

To enforce Chrome to respect the disabled autocompletion for fields,
the value of the autocomplete attribute is set to some semantic
value.

Resolves: #75809
Releases: master, 7.6
Change-Id: Ib30fdfe7d7a9ff3f564b8e016331a0706ff0db01
Reviewed-on: https://review.typo3.org/47813


Reviewed-by: Markus Sommer <markussom@posteo.de>
Tested-by: Markus Sommer <markussom@posteo.de>
Reviewed-by: Susanne Moog <typo3@susannemoog.de>
Tested-by: Susanne Moog <typo3@susannemoog.de>