fix:Order blocks in sidebar doesn't respect layout restrictions: requ…

[alihamza1221]

• I signed and returned the Plone Contributor Agreement, and received and accepted an invitation to join a team in the Plone GitHub organization.
• I verified there aren't other open pull requests for the same change.
• I followed the guidelines in Contributing to Volto.
• I succesfully ran code linting checks on my changes locally.
• I succesfully ran unit tests on my changes locally.
• I succesfully ran acceptance tests on my changes locally.
• If needed, I added new tests for my changes.
• If needed, I added documentation for my changes, either in the Storybook or narrative documentation.
• I included a change log entry in my commits.

---

fixed : Order blocks in sidebar doesn't respect layout restrictions: required and fixed position

I added the checks to display the delete block and drag block button according to values set like fixed and required.
After my change:

order.block.fixes.video.mp4

Closes #6481

[netlify]

✅ Deploy Preview for plone-components canceled.

Name	Link
🔨 Latest commit	27f4370
🔍 Latest deploy log	https://app.netlify.com/sites/plone-components/deploys/6741742e231c4d00089d5323

[alihamza1221]

@plone/volto-team I have made the appropriate changes to fix the issue and It works as wanted please If you can review this PR.

[stevepiercy]

Please see my note about the change log entry.

Otherwise, this looks really good, but it should get a thorough technical review by the @plone/volto-team. Thank you!

[stevepiercy]

News looks good, still needs a technical review.