Disagg: Set the waiting time for thread pool.

[JinheLin]

What problem does this PR solve?

Issue Number: close #9392 ref #9334

Problem Summary:

The default wait_microseconds is 0, which means never wait.

What is changed and how it works?

Set wait_microseconds to disagg_build_task_timeout.

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

None

[CalvinNeo]

lgtm

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: CalvinNeo, Lloyd-Pottiger

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2024-09-02 07:56:36.744812955 +0000 UTC m=+258321.262865882: ☑️ agreed by Lloyd-Pottiger.
• 2024-09-02 08:42:23.970704195 +0000 UTC m=+261068.488757120: ☑️ agreed by CalvinNeo.

[ti-chi-bot]

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[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-8.1: #9395.

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-7.5: #9686.