[TASK] Remove the dependency of EXT:tstemplate to EXT:frontend

Use the RootlineUtility directly in EXT:tstemplate to get
the rootline instead of using EXT:frontend which then
calls the RootlineUtility.

Resolves: #81889
Releases: master, 8.7
Change-Id: I66153204db4e1b67bf0a80efe1c5d2c73ce585fa
Reviewed-on: https://review.typo3.org/53530


Tested-by: TYPO3com <no-reply@typo3.com>
Reviewed-by: Henning Liebe <h.liebe@neusta.de>
Reviewed-by: Benjamin Kluge <b.kluge@neusta.de>
Reviewed-by: Susanne Moog <susanne.moog@typo3.org>
Tested-by: Susanne Moog <susanne.moog@typo3.org>
Reviewed-by: Oliver Klee <typo3-coding@oliverklee.de>
Reviewed-by: Daniel Goerz <ervaude@gmail.com>
Tested-by: Daniel Goerz <ervaude@gmail.com>
Reviewed-by: Wouter Wolters <typo3@wouterwolters.nl>
Tested-by: Wouter Wolters <typo3@wouterwolters.nl>