[BUGFIX] Adjust parameters of implode() for PHP 7.4

The TimeTracker has been using the wrong order of glue
and pieces, the PageLayoutView has used implode with only
one parameter. Both occurences have been adjusted.

Resolves: #89991
Releases: master, 9.5, 8.7
Change-Id: Id600409548cf89b24832afcb5d0784c24be1d1b6
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/62745


Tested-by: TYPO3com <noreply@typo3.com>
Tested-by: Georg Ringer <georg.ringer@gmail.com>
Tested-by: Andreas Fernandez <a.fernandez@scripting-base.de>
Reviewed-by: Oliver Klee <typo3-coding@oliverklee.de>
Reviewed-by: Georg Ringer <georg.ringer@gmail.com>
Reviewed-by: Andreas Fernandez <a.fernandez@scripting-base.de>