*: manual pause a task which has been pause by error (#1900)

[ti-chi-bot]

This is an automated cherry-pick of #1900

What problem does this PR solve?

close #1729

What is changed and how it works?

TaskChecker will not resume a task that is manually paused(isCancel: true)
When users manual pauses a task which has been pause by error(task stage is paused while isCancel is false), mark the isCancel to true.

Check List

Tests

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

Code changes

• Has exported function/method change
• Has exported variable/fields change
• Has interface methods change
• Has persistent data change

Side effects

• Possible performance regression
• Increased code complexity
• Breaking backward compatibility

Related changes

• Need to cherry-pick to the release branch
• Need to update the documentation
• Need to update the dm/dm-ansible
• Need to be included in the release note

[GMHDBJD]

LGTM

[ti-chi-bot]

[REVIEW NOTIFICATION]

This pull request has been approved by:

• GMHDBJD
• lance6716

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[lance6716]

/merge

[ti-chi-bot]

This pull request has been accepted and is ready to merge.

Commit hash: 50eeeb3