Add test for UI installer to ensure basic config works (4.4)

[mollux]

Q	A
Bug fix? (use the a.b branch)	[ ]
New feature/enhancement? (use the a.x branch)	[x]
Deprecations?	[ ]
BC breaks? (use the c.x branch)	[ ]
Automated tests included?	[ ]
Related user documentation PR URL	mautic/mautic-documentation#...
Related developer documentation PR URL	mautic/developer-documentation#...
Issue(s) addressed	Fixes #...

Description:

see #11557
this PR is for the 4.4 branch

[codecov]

Codecov Report

Merging #11559 (ef6efd3) into 4.4 (4c947e9) will increase coverage by 0.47%.
The diff coverage is n/a.

@@             Coverage Diff              @@
##                4.4   #11559      +/-   ##
============================================
+ Coverage     49.54%   50.02%   +0.47%     
  Complexity    35405    35405              
============================================
  Files          2144     2144              
  Lines        105542   105546       +4     
============================================
+ Hits          52296    52795     +499     
+ Misses        53246    52751     -495     

Impacted Files	Coverage Δ
...Bundle/EventListener/GeneratedColumnSubscriber.php	92.30% <0.00%> (-7.70%)	⬇️
...p/bundles/InstallBundle/Command/InstallCommand.php	70.55% <0.00%> (-0.73%)	⬇️
...es/IntegrationsBundle/Sync/SyncJudge/SyncJudge.php	0.00% <0.00%> (ø)
...dles/CoreBundle/Templating/Helper/AssetsHelper.php	72.40% <0.00%> (+2.86%)	⬆️
...dles/InstallBundle/Configurator/Step/CheckStep.php	58.33% <0.00%> (+4.16%)	⬆️
app/bundles/ReportBundle/Entity/Report.php	81.18% <0.00%> (+4.95%)	⬆️
...ugins/GrapesJsBuilderBundle/Integration/Config.php	66.66% <0.00%> (+13.33%)	⬆️
app/bundles/CoreBundle/Event/CustomAssetsEvent.php	44.44% <0.00%> (+18.51%)	⬆️
...BuilderBundle/EventSubscriber/AssetsSubscriber.php	100.00% <0.00%> (+27.27%)	⬆️
app/bundles/InstallBundle/Helper/SchemaHelper.php	71.01% <0.00%> (+27.53%)	⬆️
... and 18 more

[escopecz]

Thank you! 👍