fix: Correctly show free space if lower than quota in Files navigation

[come-nc]

• Resolves: [Bug]: Invalid quota value on user's profile page #42695

Summary

This fixes an inconsistency between files navigation and user personal settings.
Files navigation was incorrectly showing full quota even if the actual free space on disk is lower. The percentage shown is relative to free space in this case, so that is what should be shown as maximum in the UI.

When no quota is set, no maximum or percentage is shown, as before this PR.

Checklist

• Code is properly formatted
• Sign-off message is added to all commits
• Tests (unit, integration, api and/or acceptance) are included
• Screenshots before/after for front-end changes
• Documentation (manuals or wiki) has been updated or is not required
• Backports requested where applicable (ex: critical bugfixes)

[come-nc]

/backport to stable31

[come-nc]

/compile /

[come-nc]

/backport to stable30

[come-nc]

I broke it I think 🙈

  1) Quota rendering
       Non-reached quota:

      Timed out retrying after 4000ms
      + expected - actual

      -' 1 GB of NaN B used '
      +'1 GB of 5 GB used'

[come-nc]

I broke it I think 🙈

  1) Quota rendering
       Non-reached quota:

      Timed out retrying after 4000ms
      + expected - actual

      -' 1 GB of NaN B used '
      +'1 GB of 5 GB used'

Ah, no, the test needs fixing, it mocks an incomplete server answer

[come-nc]

/compile /

[come-nc]

(rebased because frontend conflicts, recompiling)

[come-nc]

This branch has conflicts that must be resolved (╯°□°）╯︵ ┻━┻

[come-nc]

/compile /