[!!!][TASK] Handle E_NOTICE free unit tests

Raise typo3/testing-framework from 2.0.4 to 3.0.0:
composer require --dev typo3/testing-framework ^3.0

The new typo3/testing-framework version comes with a change
that no longer suppresses E_NOTICE PHP errors by default and lets
tests fail that raise them.

The static property $suppressNotices in unit test files is set to
true for all test cases that currently raise E_NOTICE errors to
suppress them on a by-file basis.

Further patches should remove this property one-by-one again by
fixing the system under test the unit test case handles.

Change-Id: I7d44fe3723ce5820a37051ae31f16b2f142ffba6
Resolves: #83889
Related: #83888
Releases: master
Reviewed-on: https://review.typo3.org/55697


Reviewed-by: Tymoteusz Motylewski <t.motylewski@gmail.com>
Tested-by: Tymoteusz Motylewski <t.motylewski@gmail.com>
Tested-by: TYPO3com <no-reply@typo3.com>
Reviewed-by: Markus Klein <markus.klein@typo3.org>
Tested-by: Markus Klein <markus.klein@typo3.org>