fix(dashboard): customer groups fixes

[fPolic]

What

• fix add customer to customer group toast
• move modal actions to footer

---

FIXES CC-514

[vercel]

The latest updates on your projects. Learn more about Vercel for Git ↗︎

Name	Status	Preview	Comments	Updated (UTC)
medusa-dashboard	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Sep 23, 2024 2:13pm

6 Skipped Deployments

Name	Status	Preview	Comments	Updated (UTC)
api-reference	⬜️ Ignored (Inspect)			Sep 23, 2024 2:13pm
api-reference-v2	⬜️ Ignored (Inspect)	Visit Preview		Sep 23, 2024 2:13pm
docs-ui	⬜️ Ignored (Inspect)	Visit Preview		Sep 23, 2024 2:13pm
docs-v2	⬜️ Ignored (Inspect)	Visit Preview		Sep 23, 2024 2:13pm
medusa-docs	⬜️ Ignored (Inspect)	Visit Preview		Sep 23, 2024 2:13pm
resources-docs	⬜️ Ignored (Inspect)	Visit Preview		Sep 23, 2024 2:13pm

[changeset-bot]

⚠️ No Changeset found

Latest commit: 37a9eea

Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. If these changes should result in a version bump, you need to add a changeset.

This PR includes no changesets

When changesets are added to this PR, you'll see the packages that this PR includes changesets for and the associated semver types

Click here to learn what changesets are, and how to add one.

Click here if you're a maintainer who wants to add a changeset to this PR

[olivermrbl]

LGTM