Fix: move state init to a service

[hamza221]

Fix https://github.com/nextcloud/assistant/issues/92#issuecomment-2202580698 Fix #6076

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 24.08%. Comparing base (93374fa) to head (eca7d15). Report is 12 commits behind head on main.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #6103 +/- ## ============================================ + Coverage 24.02% 24.08% +0.05% + Complexity 457 456 -1 ============================================ Files 246 247 +1 Lines 11565 11529 -36 Branches 2153 2152 -1 ============================================ - Hits 2779 2777 -2 + Misses 8472 8438 -34 Partials 314 314 ``` | [Flag](https://app.codecov.io/gh/nextcloud/calendar/pull/6103/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=nextcloud) | Coverage Δ | | |---|---|---| | [javascript](https://app.codecov.io/gh/nextcloud/calendar/pull/6103/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=nextcloud) | `15.56% <ø> (ø)` | | | [php](https://app.codecov.io/gh/nextcloud/calendar/pull/6103/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=nextcloud) | `59.50% <ø> (+0.85%)` | :arrow_up: | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=nextcloud#carryforward-flags-in-the-pull-request-comment) to find out more.

:umbrella: View full report in Codecov by Sentry.
:loudspeaker: Have feedback on the report? Share it here.

[hamza221]

/backport to stable4.7