`scope_work_depth()` analysis modifies original SDFG
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bug
- Dominant language
- Python
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Description
**Describe the bug**
Using `scope_work_depth()` on an SDFG with loops removes the backedges in the state machine.
**To Reproduce**
Steps to reproduce the behavior:
1. Checkout DaCe (Commit Hash: 74a31cb71e624fe541a32b3b097e46b193d08114)
2. Execute the provided Python script with the sample SDFG in this [source](https://github.com/user-attachments/files/17194074/src.zip)
3. Inspect `out.sdfg`
**Expected behavior**
`scope_work_depth()` should not modify the passed SDFG.
**Screenshots**
The SDFG on the left is the sample SDFG and the SDFG on right has been analysed with `scope_work_depth()`.
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Assessment
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