Fix import and export button style

[shu20031026]

Summary

align the label inside the button to the left.

before	after

notion

https://www.notion.so/cyberagent-group/export-import-a3baebb9db5544708c15e0c6e30c0691

Checklist

• [x] changeset file(s) included

[changeset-bot[bot]]

🦋 Changeset detected

Latest commit: 1d4039dcdd39547cb55c07ec850978a13e3336df

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

| Name | Type | | ---------- | ----- | | @viron/app | Patch |

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