fix: freeze displayed provider for results

[GodHad]

No description provided.

[github-actions]

All contributors have signed the CLA ✍️ ✅
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[hanneshapke]

@GodHad Thank you for your PR. Can you please explain your motivation for your code change / PR?

[hanneshapke]

The link to the CLA is https://github.com/dataiku/kiji-proxy/blob/1f172d2a29fc570e5bf326e7915eb28dc0cc9809/.github/cla/CLA.md

you can sign the CLA by posting "recheck"

[GodHad]

Thanks for the review.
My motivation for this change is to avoid a misleading provider label in the demo UI. Before this PR, the request was sent using the provider selected at submit time, but the result labels continued to read from the currently selected provider. That meant changing providers while a request was in flight, or after results were shown, could make an old response appear as if it came from a different provider.
This PR freezes the provider associated with the submitted request for the displayed result and disables provider switching while processing, so the request/response boxes stay consistent with the provider actually used.

recheck

[GodHad]

recheck

[hanneshapke]

@GodHad Thank you for your explanation. Let me review your PR.

I will also review the CLA mechanism.

[hanneshapke]

@GodHad please sign by posting "I have read the CLA Document and I hereby sign the CLA" as a Pull Request comment

Thank you

[hanneshapke]

One more ask @GodHad : in this pr, could you please add your name to the contributors.md file? Thank you.

I can then restamp the pr.

[hanneshapke]

Please add your name to the contributors.md file. Thank you

[GodHad]

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

[hanneshapke]

@Davidnet Looks like this PR is in response to your reported issue: #137

[hanneshapke]

recheck