gh-116180: check if globals is NULL and set error in run_eval_code_obj()

[ngr-ilmarh]

Add globals NULL check in run_eval_code_obj to avoid possible segmentation fault

• Issue: Possible segfault if globals dict is NULL in run_eval_code_obj #116180

[ghost]

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[bedevere-app]

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[gpshead]

FYI - PRs ordinarily need to be made against the main branch. We backport to releases after things are fixed in main. If something is not relevant in main or later releases that needs to be stated in the PR and relevant issue.

Realize that 3.10 is no longer accepting non-security bug fixes.