Can not add multi URL picker in element a Block list when content inherited element from that Block list

[NguyenThuyLan]

Which Umbraco version are you using? (Please write the exact version, example: 10.1.0)

15.1.0-rc

Bug summary

Umbraco.-.Google.Chrome.2024-12-10.13-58-59.mp4

Specifics

No response

Steps to reproduce

1. Create an element that has a Multi URL Picker
2. Create a document type that has a Block List and add the element into it.
3. Click Compositions and inherit the element to the document type.
4. Create content by that document type.
5. Add new element, add new URL in element
   ==> The URL is added to the URL Picker outside the BlockList

Expected result / actual result

No response

[PerplexDaniel]

I believe this has the same root cause as issues #17756 and #17312 because the modal used to add the Multi URL Picker has no unique id for the nested one so the outer one is used instead.

I assume this only occurs when the Block List is set to "Inline Editing" (like in your video).