fix(core): Fix issue with fast-importer-service stock location

[ankitdev10]

Description

Fixes: this
Even when passing stockLevels to the createProductVariant, the variant was linked to the stock location from the default channel

Breaking changes

No

Screenshots

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Checklist

📌 Always:

• I have set a clear title
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• I have checked my own PR

👍 Most of the time:

• I have added or updated test cases
• I have updated the README if needed

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Name	Status	Preview	Updated (UTC)
docs	✅ Ready (Inspect)	Visit Preview	Dec 30, 2024 3:45pm

[github-actions]

All contributors have signed the CLA ✍️ ✅
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[ankitdev10]

I have read the CLA Document and I hereby sign the CLA

[michaelbromley]

For some reason the CI workflows did not run. I also noticed that the lockfile is part of this commit but that seems like it should not be there. Could you update the PR to remove the lockfile change, and then hopefully all the tests run too.

[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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