Revert "[BUGFIX] Do not reset Page Renderer on partial rendering"

The page renderer is not designed to work with
a second rendering pass without resetting to its initial state.

Not resetting will cause double compression of files and
creating wrong version numbered file names.

Reverting this again means: ->addFooter* calls are ignored
when being called before first rendering pass and
only work when done after first rendering pass.

Although this behavior is highly intransparent
it cannot easily be fixed without heavy refactoring
of the page renderer which most likely will break hooks.

Introduced regression by this change: #57919 and #58010

This reverts commit c67e8ebbb074c46dae40bec329db7392e023b0d6

Change-Id: I9e489e49f65bb69e2f3c3b997cc14465d6a08d80
Reviewed-on: https://review.typo3.org/29580
Reviewed-by: Wouter Wolters
Tested-by: Wouter Wolters
Reviewed-by: Markus Klein
Tested-by: Markus Klein