fix: sidebar editor tab scrolling

[st3iny]

Regression from https://github.com/nextcloud/calendar/pull/6081

The rule specificity changed so some styles were no longer overwritten by nc-vue.

[codecov[bot]]

Codecov Report

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

Project coverage is 29.71%. Comparing base (4ca0dca) to head (9cb56bd). Report is 15 commits behind head on main.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #6087 +/- ## ========================================= Coverage 29.71% 29.71% Complexity 914 914 ========================================= Files 287 287 Lines 13835 13835 Branches 2163 2163 ========================================= Hits 4111 4111 Misses 9409 9409 Partials 315 315 ``` | [Flag](https://app.codecov.io/gh/nextcloud/calendar/pull/6087/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/6087/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=nextcloud) | `15.57% <ø> (ø)` | | | [php](https://app.codecov.io/gh/nextcloud/calendar/pull/6087/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=nextcloud) | `58.65% <ø> (ø)` | | 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.

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[st3iny]

/backport to stable4.7