[FC-0059] feat: allow copy library v2 xblock

[rpenido]

Description

This PR changes the content stage Rest API to allow copying XBlocks from Libraries V2.

Testing instructions

Follow the instructions from openedx/frontend-app-authoring#1197

---

Private ref: FAL-3769

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[yusuf-musleh]

@rpenido I faced an issue when trying to copy blocks, I needed to make the change below in order for it to work. Can you double check to see if that was indeed an issue or if I am doing something wrong on my end?

[rpenido]

@rpenido I faced an issue when trying to copy blocks, I needed to make the change below in order for it to work. Can you double check to see if that was indeed an issue or if I am doing something wrong on my end?

You're right @yusuf-musleh! Thank you for catching this!
Fixed here: 942fc91

[yusuf-musleh]

👍 @rpenido Thanks for the fix! Everything is working well.

• I tested this: I followed the testing instructions in the frontend PR
• I read through the code
• I checked for accessibility issues
• Includes documentation

[bradenmacdonald]

Looks great, thanks!

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@rpenido 🎉 Your pull request was merged! Please take a moment to answer a two question survey so we can improve your experience in the future.

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2U Release Notice: This PR has been deployed to the edX staging environment in preparation for a release to production.

[edx-pipeline-bot]

2U Release Notice: This PR has been deployed to the edX production environment.

[edx-pipeline-bot]

2U Release Notice: This PR has been deployed to the edX production environment.