This is an automated cherry-pick of #40284

What problem does this PR solve?

Issue Number: close #40038

Problem Summary:
When tidb-server recives SIGTERM, it doesn't exit until auto analyze is finished.

What is changed and how it works?

When tidb-server is gracefully shutting down, kill sys processes(including auto analyze). In this way, it can exit quickly.

Check List

Tests

• Unit test
• Integration test
• Manual test (add detailed scripts or steps below)

Set up a cluster and import tpcc data. When finding one tidb-server starts to auto analyze a large table(such as order_line or stock), kill the tidb-server. Before the PR, the tidb-server would not exit until auto analyze is finished. After the PR, auto analyze would be killed and the tidb-server can exit quickly.

• 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