Fix unable to save attribute value

[poulch]

closes #3769

Screenshots

Pull Request Checklist

1. This code contains UI changes
2. All visible strings are translated with proper context including data-formatting
3. Attributes data-test-id are added for new elements
4. The changes are tested in Chrome/Firefox/Safari browsers and in light/dark mode
5. Your code works with the latest stable version of the core
6. I added changesets and read good practices

Test environment config

API_URI=https://automation-dashboard.staging.saleor.cloud/graphql/
APPS_MARKETPLACE_API_URI=https://apps.staging.saleor.io/api/v2/saleor-apps

Do you want to run more stable tests?

To run all tests, just select the stable checkbox. To speed up tests, increase the number of containers. Tests will be re-run only when the "run e2e" label is added.

1. stable
2. giftCard
3. category
4. collection
5. attribute
6. productType
7. shipping
8. customer
9. permissions
10. menuNavigation
11. pages
12. sales
13. vouchers
14. homePage
15. login
16. orders
17. products
18. app
19. plugins
20. translations
21. navigation
22. variants
23. payments

CONTAINERS=7

[changeset-bot]

🦋 Changeset detected

Latest commit: 583da23

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

This PR includes changesets to release 1 package

Name	Type
saleor-dashboard	Patch

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