PYTHON-5715 Add appName to OIDC test failpoints

[blink1073]

PYTHON-5715

Changes in this PR

Ensure appName is used in the failCommands in the OIDC tests and sync to the updated OIDC test.

Test Plan

https://spruce.mongodb.com/version/6984eb71f7849a0007a963e9/tasks?sorts=STATUS%3AASC%3BBASE_STATUS%3ADESC

Checklist

Checklist for Author

• Did you update the changelog (if necessary)?
• Is there test coverage?
• Is any followup work tracked in a JIRA ticket? If so, add link(s).

Checklist for Reviewer

• Does the title of the PR reference a JIRA Ticket?
• Do you fully understand the implementation? (Would you be comfortable explaining how this code works to someone else?)
• Is all relevant documentation (README or docstring) updated?

[aclark4life]

LGTM! Why dict over SON?

[blink1073]

SON is redundant now that dictionaries are ordered by default, we had previously migrated some internal usages of SON to dict but missed this one.