FE: Auth: Fix /login redirect loop

[gaussianrecurrence]

• Breaking change? (if so, please describe the impact and migration path for existing application instances)

What changes did you make? (Give an overview)

Fixed login redirect whenever the FQDN was containing auth in it by checking just the pathname instead of the entire URL

Is there anything you'd like reviewers to focus on?

How Has This Been Tested? (put an "x" (case-sensitive!) next to an item)

• No need to
• Manually (please, describe, if necessary)
• Unit checks
• Integration checks
• Covered by existing automation

Checklist (put an "x" (case-sensitive!) next to all the items, otherwise the build will fail)

• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation (e.g. ENVIRONMENT VARIABLES)
• My changes generate no new warnings (e.g. Sonar is happy)
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged

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Fixes #1261

[github-actions]

Hi gaussianrecurrence! 👋

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[gaussianrecurrence]

I manually tested the change, still I am not sure whether or not it's possible to automatically test this in any way. Not sure if @Haarolean you could suggest some approaches or you think it's not worth the effort to invest in automatic testing for this specific PR?

[Haarolean]

I manually tested the change, still I am not sure whether or not it's possible to automatically test this in any way. Not sure if @Haarolean you could suggest some approaches or you think it's not worth the effort to invest in automatic testing for this specific PR?

nah, dw :)

[Vixtir]

lgtm!

[Haarolean]

@gaussianrecurrence thanks for your first PR! 🫡