BUGFIX: Update status code if obsolete redirect targets get updated

[dlubitz]

If I create an redirect, which source uri is already set up as target uri, this redirect becomes obsolete. So this obsolete redirect get corrected to the new target. Now the status code of the obsolete redirect gets also updated.

# before
Existing: "/foo" => "/bar" (301)
New: "/bar" => "" (410)
Corrected: "/foo" => "" (301)

# after fix
Existing: "/foo" => "/bar" (301)
New: "/bar" => "" (410)
Corrected: "/foo" => "" (410)

Also fixed styling and test execution.

[dlubitz]

Sorry for the many formatting changes. But so we get the pipeline green again.

Actual change is just:
https://github.com/neos/redirecthandler-databasestorage/pull/28/files?diff=split&w=1#diff-3adf7c6086c560924366c8411bec302ff4326bfdce18d5323ea2aa75c33cb91aR294-R295

and the new tests.

[mhsdesign]

i trust you

[ahaeslich]

Tested it in combination with neos/redirecthandler-neosadapter#60