Spring-ai Fix merge verifications in the Azure chat client

This PR fixes merge inspections in AzureOpenAiChatClient. No additional unit tests are required.

Comment From: tzolov

Thank you @reugn for spotting the options merging discrepancy. After further investigation I've notice more issues that i've tried to address in 93bd5021a1b79e9e657b487645e1591d4e8bf7fb.

Comment From: tzolov

This problem has been addressed by the 93bd5021a1b79e9e657b487645e1591d4e8bf7fb @reugn feel free to re-open if your issue is not solved.