scheduler: fix scheduler save config (#7108)

[ti-chi-bot]

This is an automated cherry-pick of #7108

What problem does this PR solve?

Issue Number: Close #6897

What is changed and how does it work?

Nowadays we have 2 configs setting way
We need to make sure that create just means create and not further save the configuration

Check List

Tests

• Unit test
• Integration test
• Manual test (add detailed scripts or steps below)

Release note

None.

[ti-chi-bot]

[REVIEW NOTIFICATION]

This pull request has been approved by:

• disksing

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[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: disksing, lhy1024, rleungx

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2024-09-14 02:52:10.300692424 +0000 UTC m=+670400.041116358: ☑️ agreed by rleungx.
• 2024-09-14 03:12:58.317061794 +0000 UTC m=+671648.057485730: ☑️ agreed by lhy1024.