[BugFix] reset the start time before execution (backport #55433)

[mergify]

Why I'm doing:

What I'm doing:

AnalyzeStatus.StartTime should count from the beginning of execution rather than pending. For certain cases it can pend in the queue for a long time.

Fixes #55447

What type of PR is this:

• BugFix
• Feature
• Enhancement
• Refactor
• UT
• Doc
• Tool

Does this PR entail a change in behavior?

• Yes, this PR will result in a change in behavior.
• No, this PR will not result in a change in behavior.

If yes, please specify the type of change:

• Interface/UI changes: syntax, type conversion, expression evaluation, display information
• Parameter changes: default values, similar parameters but with different default values
• Policy changes: use new policy to replace old one, functionality automatically enabled
• Feature removed
• Miscellaneous: upgrade & downgrade compatibility, etc.

Checklist:

• I have added test cases for my bug fix or my new feature
• This pr needs user documentation (for new or modified features or behaviors)
  • I have added documentation for my new feature or new function
• This is a backport pr

[mergify]

Cherry-pick of 3ac86d6 has failed:

On branch mergify/bp/branch-3.2/pr-55433
Your branch is up to date with 'origin/branch-3.2'.

You are currently cherry-picking commit 3ac86d6cff.
  (fix conflicts and run "git cherry-pick --continue")
  (use "git cherry-pick --skip" to skip this patch)
  (use "git cherry-pick --abort" to cancel the cherry-pick operation)

Changes to be committed:
	modified:   fe/fe-core/src/main/java/com/starrocks/statistic/AnalyzeStatus.java
	modified:   fe/fe-core/src/main/java/com/starrocks/statistic/ExternalAnalyzeStatus.java
	modified:   fe/fe-core/src/main/java/com/starrocks/statistic/NativeAnalyzeStatus.java

Unmerged paths:
  (use "git add/rm <file>..." as appropriate to mark resolution)
	deleted by us:   fe/fe-core/src/main/java/com/starrocks/statistic/StatisticsCollectionTrigger.java

To fix up this pull request, you can check it out locally. See documentation: https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/reviewing-changes-in-pull-requests/checking-out-pull-requests-locally

[mergify]

@mergify[bot]: Backport conflict, please reslove the conflict and resubmit the pr

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
76.9% Duplication on New Code

See analysis details on SonarQube Cloud