br: retry to scatter the regions if status is timeout or cancel (#46471)

[ti-chi-bot]

This is an automated cherry-pick of #46471

What problem does this PR solve?

Issue Number: close #47236

ref #46001

Problem Summary:
Due to the store limit, the regions with CANCEL or TIMEOUT status needs to be scatterred again.

What is changed and how it works?

retry to scatter the region if the status is not RUNNING or SUCCESS.

Check List

Tests

• Unit test
• Integration test
• Manual test (add detailed scripts or steps below)
• No code

Side effects

• Performance regression: Consumes more CPU
• Performance regression: Consumes more Memory
• Breaking backward compatibility

Documentation

• Affects user behaviors
• Contains syntax changes
• Contains variable changes
• Contains experimental features
• Changes MySQL compatibility

Release note

Please refer to Release Notes Language Style Guide to write a quality release note.

None

[Leavrth]

/retest

[Leavrth]

/test pull-br-integration-test

[tiprow]

@Leavrth: No presubmit jobs available for pingcap/tidb@release-6.5

In response to this:

/test pull-br-integration-test

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[codecov]

Codecov Report

❗ No coverage uploaded for pull request base (release-6.5@5a6c8c8). Click here to learn what that means.
The diff coverage is n/a.

Additional details and impacted files

@@               Coverage Diff                @@
##             release-6.5     #48377   +/-   ##
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[Leavrth]

/test pull-br-integration-test

[tiprow]

@Leavrth: No presubmit jobs available for pingcap/tidb@release-6.5

In response to this:

/test pull-br-integration-test

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository.

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: BornChanger, Leavrth

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Needs approval from an approver in each of these files:

• OWNERS [Leavrth]

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2023-11-23 12:36:41.312502376 +0000 UTC m=+494229.977728567: ☑️ agreed by Leavrth.
• 2023-11-24 02:39:40.224686267 +0000 UTC m=+544808.889912463: ☑️ agreed by BornChanger.