session: set process info before building plan (#22101)

[ti-srebot]

cherry-pick #22101 to release-5.0-rc

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What problem does this PR solve?

Issue Number: close #22068

Problem Summary:
Uncorrelated subqueries will execute once when building plan, and it maybe cost much time. So we set process info before building plan, to trace the running time and info.

What is changed and how it works?

Proposal: xxx

What's Changed:

How it Works:

Related changes

• Need to cherry-pick to the release branch 4.0,5.0

Check List

Tests

• Manual test (add detailed scripts or steps below)
  Session 1:
  select 1 from t where a = (select sleep(30));
  Session 2:

[tidb]> show processlist;
+------+------+-----------+------+---------+------+------------+----------------------------------------------+
| Id   | User | Host      | db   | Command | Time | State      | Info                                         |
+------+------+-----------+------+---------+------+------------+----------------------------------------------+
|    3 | root | 127.0.0.1 | test | Query   |    6 | autocommit | select 1 from t where a = (select sleep(30)) |
|    5 | root | 127.0.0.1 | NULL | Query   |    0 | autocommit | show processlist                             |
+------+------+-----------+------+---------+------+------------+----------------------------------------------+
2 rows in set (0.000 sec)

Side effects

Release note

• Show process info when building plan.

[ti-srebot]

/run-all-tests

[ti-srebot]

@wshwsh12 you're already a collaborator in bot's repo.

[bb7133]

Please resolve the conflicts @wshwsh12