[BUGFIX] ElementBrowser: correct link attributes

This is a regression fix for #55983, which introduced
additional urlencoding for title, class, ...

Remove the encoding again.

Resolves: #59199
Releases: 6.2
Change-Id: I28650676f4ae0b74256a770af12054750027cbfa
Reviewed-on: https://review.typo3.org/30483
Reviewed-by: Markus Bucher
Tested-by: Markus Bucher
Reviewed-by: Tymoteusz Motylewski
Tested-by: Tymoteusz Motylewski
Reviewed-by: Wouter Wolters
Tested-by: Wouter Wolters