Fix PostCommit Python Xlang IO Direct

[akashorabek]

Fixes: #32809
Successful run example: https://github.com/akashorabek/beam/actions/runs/15985132253
Changed the ID logic and scheduled it to start one hour earlier to avoid possible collisions when running this workflow in parallel with other PostCommit Python Xlang workflows.

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[akashorabek]

Failing check isn't realted

[damccorm]

Thanks