:bug: Fix field alignment on the Repositories>Maven page

[sjd78]

The info text box and the "Clear repository" button is now aligned horizontally and above the switch.

Resolves: https://issues.redhat.com/browse/MTA-3149

[sjd78]

Before:

After:

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 0% with 9 lines in your changes missing coverage. Please review.

Project coverage is 42.15%. Comparing base (b654645) to head (122edbf). Report is 201 commits behind head on main.

Files	Patch %	Lines
client/src/app/pages/repositories/Mvn.tsx	0.00%	9 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #2029 +/- ## ========================================== + Coverage 39.20% 42.15% +2.95% ========================================== Files 146 171 +25 Lines 4857 5503 +646 Branches 1164 1305 +141 ========================================== + Hits 1904 2320 +416 - Misses 2939 3167 +228 - Partials 14 16 +2 ``` | [Flag](https://app.codecov.io/gh/konveyor/tackle2-ui/pull/2029/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=konveyor) | Coverage Δ | | |---|---|---| | [client](https://app.codecov.io/gh/konveyor/tackle2-ui/pull/2029/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=konveyor) | `42.15% <0.00%> (+2.95%)` | :arrow_up: | | [server](https://app.codecov.io/gh/konveyor/tackle2-ui/pull/2029/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=konveyor) | `?` | | 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=konveyor#carryforward-flags-in-the-pull-request-comment) to find out more.

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