Only refresh podgroup to running when pods are scheduled

[JesseStutler]

What type of PR is this?

/kind bug

What this PR does / why we need it:

When pod bind/preBind fails, the pod has been resynced, but the pg remains in running state, which may confuse users.Now only the number of scheduled pods( Bound/Running) exceed the minAvailable will refresh the podgroup to Running, allocated/binding in session currently will not be counted

Which issue(s) this PR fixes:

Fixes # https://github.com/volcano-sh/volcano/issues/4383

Special notes for your reviewer:

Does this PR introduce a user-facing change?

Now only the number of scheduled pods(Bound/Running) exceed the minAvailable will refresh the podgroup to Running, allocated/binding pods recorded in session currently will not be counted

[JesseStutler]

After modification, if prebind fails, then podgroup will keep in Inqueue state and will not be refreshed to Running state:

[JesseStutler]

/cc @lowang-bh @hwdef @Monokaix

[Monokaix]

/approve

[volcano-sh-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: Monokaix

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[hwdef]

/lgtm