fix(core-flow): invalid update quantity in update line item in cart workflow

[daykrm]

What
Use 'quantity' from request instead of cart item's quantity in updateLineItemInCartWorkflow
Why
To resolve the issue where users can update line item quantities exceeding stock levels

CLOSES SUP-542

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[fPolic]

LGTM! Thanks @daykrm

[olivermrbl]

Nice, appreciate the contribution

[olivermrbl]

@daykrm, can you look into the failing test?

[daykrm]

@daykrm, can you look into the failing test?

sure, I'll take a look

[daykrm]

this should already work @olivermrbl

[oDestroyeRo]

@olivermrbl Hi, could you please review this PR again? We’re currently blocked. Thank you.

[kodiakhq]

This PR currently has a merge conflict. Please resolve this and then re-add the automerge label.

[olivermrbl]

@daykrm, any chance you can resolve the conflicts, so we can get it merged? 🙏

[daykrm]

I fixed the PR conflict. Please take another look. @olivermrbl