processor: fix addTable waiting for done (#1332)

[ti-srebot]

cherry-pick #1332 to release-4.0
You can switch your code base to this Pull Request by using git-extras:

# In ticdc repo:
git pr https://github.com/pingcap/ticdc/pull/1363

After apply modifications, you can push your change to this PR via:

git push git@github.com:ti-srebot/ticdc.git pr/1363:release-4.0-2d0353221a49

---

What problem does this PR solve?

#1330

What is changed and how it works?

• Let processor wait for the table checkpoint to catch up with the global checkpoint, before marking the operation as done.

Check List

Tests

• Integration test

Related changes

• Need to cherry-pick to the release branch

Release note

• Fix potential data loss if a processor crashes when starting up a table.

[ti-srebot]

/run-all-tests