[BUGFIX] Use type=search for SvgTree filter

The SvgTree filter previously used type=text,
which prevented the element from properly
responding to keyboard events, e.g. using
"escape" to clear the search term.

This is now fixed by using type=search. This
also allows to remove the manual "clearable"
initialization, which is the default browser
behaviour for this type.

Resolves: #95226
Releases: master
Change-Id: Ie0bd636a840c399643b97c43a6e969ca1f97ba32
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/71092


Tested-by: Jochen <rothjochen@gmail.com>
Tested-by: Georg Ringer <georg.ringer@gmail.com>
Reviewed-by: Jochen <rothjochen@gmail.com>
Reviewed-by: Georg Ringer <georg.ringer@gmail.com>