Fix UI login failing without a prior login

Description

Fixes the UI failing to log in if no prior token was present.

Changes

/login calls now are marked unauthenticated and do no longer cause an infinite modal loop.

Additions

N/A

Test and Review

To be filled in by the reviewers

• All of the methods are commented to expectation

• The methods are tested to satisfaction

• There are no unnecessary files present in the MR

• The continuous integration has no problems with the MR

• The MR is filled in as requested (including labels, milestones, and reviewers)

• The documentation is up-to-date

• All nullable parameters are marked as such

added priocritical typebug ui labels

assigned to @leverse

merged

mentioned in commit 5d99eb0b

unassigned @leverse