Fix issue with "list index out of range" when max_iter=1

[Stickic-cyber]

Why are these changes needed?

Fixes a bug where record_state was not called when max_iter=1, ensuring consistent behavior across all iteration counts.
The file 'test_max_iter_1.py' are needed to test that the AutoML process runs correctly by setting max_iter=1, allowing model training and hyperparameter optimization.

Related issue number

Closes #1416

Checks

• I've used pre-commit to lint the changes in this PR (note the same in integrated in our CI checks).
• I've included any doc changes needed for https://microsoft.github.io/FLAML/. See https://microsoft.github.io/FLAML/docs/Contribute#documentation to build and test documentation locally.
• I've added tests (if relevant) corresponding to the changes introduced in this PR.
• I've made sure all auto checks have passed.

[thinkall]

Thank you for the PR, @Stickic-cyber . Please fix the format issue. Others LGTM, as we've discussed in #1417.

[Stickic-cyber]

Thank you for the PR, @Stickic-cyber . Please fix the format issue. Others LGTM, as we've discussed in #1417.

Thank you for the feedback! I've fixed the format issue as requested. The other parts remain unchanged

[thinkall]

@Stickic-cyber need to fix the test errors

[Stickic-cyber]

@Stickic-cyber need to fix the test errors

The test test_constraints fails with an IndexError: list index out of range because analysis.trials is empty. I will try to fix this.