[enhance](table)Remove unnecessary locks

[zddr]

What problem does this PR solve?

OlapTable.getPartitionIds not need get readLock, Because it only returns the ID list without any traversal or other operations. If the caller needs to keep the partition of the table unchanged after obtaining the ID list, they should lock it themselves

Issue Number: close #xxx

Related PR: #xxx

Problem Summary:
Remove unnecessary locks

Release note

Remove unnecessary locks

Check List (For Author)

• Test

  • Regression test
  • Unit Test
  • Manual test (add detailed scripts or steps below)
  • No need to test or manual test. Explain why:
    • This is a refactor/code format and no logic has been changed.
    • Previous test can cover this change.
    • No code files have been changed.
    • Other reason

• Behavior changed:

  • No.
  • Yes.

• Does this need documentation?

  • No.
  • Yes.

Check List (For Reviewer who merge this PR)

• Confirm the release note
• Confirm test cases
• Confirm document
• Add branch pick label

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4. Which code was refactored and why was this part of the code refactored?
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[zddr]

run buildall

[github-actions]

PR approved by at least one committer and no changes requested.

[github-actions]

PR approved by anyone and no changes requested.

[zddr]

run cloud_p0