Bug/Fix feedstock mac

[figueroa1395]

Feedstock is crashing after 1.9.72 on Mac OS. From the error log in the Azure pipelines, this can be traced back to #778, specifically to the test_simple_permanent_update test.

In the test, a single permanent update was done via model.update(update_data=update_batch), where update_batch was a many-scenario batch dataset, rather than a single scenario one, which is expected to work. However, due to the crash in the feedstock's CI, it was found that this functionality is not properly tested in the core.

In this PR, the python test test_simple_permanent_update is changed to handle a single scenario permanent update to confirm this was the root of the issue and tests are added in the core to test the intended functionality.

I expect two possible outcomes:

• CI passes here: We merge and check if it now passes in feedstock. If it passes in the feedstock, the bug is either in the python interface with the C API (unlikely) or a memory alignment problem (most likely), as it was found in b3ca98f and reproduced in Repro case for buffer alignment  #769. The core should be good.
• CI fails here: Since the new tests pass in my local, the core implementation should be fine and I would expect this to fail on the Mac CI, and would have to assess in that case.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

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