fix: Generate unique pointer correctly

[TomasEng]

Description

The newly introduced uniquePointer concept, which generates a unique ID for each node in the tree view, does not take combinations into account, which leads to errors. This pull request adds an extractCategoryFromPointer function that basically returns the part of the pointer that comes before the name (properties, anyOf etc.). This function is then used to generate the unique pointer correctly.

Steps to reproduce the bug

1. Create a new datamodel or open an existing one in the data modelling tool
2. Add a combination node to the root
3. Convert the new node to a type
4. Open the new type, either from the type button or from the type panel on the left
5. Add a child node to the type
6. Click on the child node and see that an error appears

Spiller.inn.2024-09-25.131013.mp4

Verification

• Your code builds clean without any errors or warnings
• Manual testing done (required)
• Relevant automated test added (if you find this hard, leave it and we'll help out)

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 95.24%. Comparing base (034c44d) to head (e0a91c6).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main   #13635   +/-   ##
=======================================
  Coverage   95.23%   95.24%           
=======================================
  Files        1502     1502           
  Lines       20567    20582   +15     
  Branches     2492     2493    +1     
=======================================
+ Hits        19588    19603   +15     
  Misses        869      869           
  Partials      110      110           

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[ErlingHauan]

Nicely done 🚀

[framitdavid]

tested on localhost, tested OK.