Python: Fixed Python bug when enable_json_response=True

[shethaadit]

Description

Fixed Python bug when enable_json_response=True

• Closes Python: Bug: Assistant Agent enable json error #10375

Contribution Checklist

• [Y] The code builds clean without any errors or warnings
• [Y] The PR follows the SK Contribution Guidelines and the pre-submission formatting script raises no violations
• [Y] All unit tests pass, and I have added new tests where possible
• [Y] I didn't break anyone 😄

Fixes #10375

[markwallace-microsoft]

Python Test Coverage Report •

File	Stmts	Miss	Cover	Missing
semantic_kernel/agents/open_ai
open_ai_assistant_base.py	521	13	98%	188, 197–202, 282, 298–299, 767, 821, 1027, 1035, 1120, 1184
TOTAL	17593	2359	87%

Python Unit Test Overview

Tests	Skipped	Failures	Errors	Time
3049	4 💤	0 ❌	0 🔥	1m 10s ⏱️

[moonbox3]

@shethaadit there are some unit tests that need to be updated (that were incorrectly looking at the enable_json_response config).

[shethaadit]

Hi @moonbox3, I have fixed all Unit Tests and the run is 100% successful I believe. Could you please take a look at again and approve?

[moonbox3]

Hi @moonbox3, I have fixed all Unit Tests and the run is 100% successful I believe. Could you please take a look at again and approve?

Definitely! Thank you for doing that.

[shethaadit]

Hi @moonbox3, somehow it shows all test case passed but merge-gatekeeper is failing. Can you please help?

[moonbox3]

Hi @moonbox3, somehow it shows all test case passed but merge-gatekeeper is failing. Can you please help?

Yes, I'm on it, no worries.

[moonbox3]

We've got a PR going in to unblock this -- our ollama integration tests are unstable, so we will be skipping them for now. I'll get this merged once that is in main.