[TASK] Do not render robots metatag on pages with index,follow

Index,follow is default behaviour for robots. In case that a page have
the index and follow attributes, the robots tag is not generated in
frontend.

Resolves: #86570
Releases: master
Change-Id: I951a25150f48bc16e15e8d10516be0347632cea0
Reviewed-on: https://review.typo3.org/58590


Tested-by: TYPO3com <no-reply@typo3.com>
Tested-by: Riccardo De Contardi <erredeco@gmail.com>
Reviewed-by: Łukasz Uznański <l.uznanski@macopedia.pl>
Tested-by: Łukasz Uznański <l.uznanski@macopedia.pl>
Reviewed-by: Josef Glatz <josef.glatz@typo3.org>
Tested-by: Josef Glatz <josef.glatz@typo3.org>
Reviewed-by: Marc Hirdes <hirdes@clickstorm.de>
Tested-by: Marc Hirdes <hirdes@clickstorm.de>
Reviewed-by: Jörg Bösche <typo3@joergboesche.de>
Tested-by: Jörg Bösche <typo3@joergboesche.de>
Reviewed-by: Markus Klein <markus.klein@typo3.org>
Tested-by: Markus Klein <markus.klein@typo3.org>