Implement regression test for PXB 8.4.0-7 - #10

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[rdjson] reported by reviewdog 🐶 Add `from __future__ import annotations` to simplify `typing.Optional` Raw Output: message:"Add `from __future__ import annotations` to simplify `typing.Optional`" location:{path:"/home/runner/work/server-qa/server-qa/test_scripts/pxb/test_helper.py" range:{start:{line:1288 column:19} end:{line:1288 column:27}}} severity:WARNING source:{name:"ruff" url:"https://docs.astral.sh/ruff"} code:{value:"FA100" url:"https://docs.astral.sh/ruff/rules/future-rewritable-type-annotation"} suggestions:{range:{start:{line:6 column:1} end:{line:6 column:1}} text:"from __future__ import annotations\n"}

[rdjson] reported by reviewdog 🐶 Add `from __future__ import annotations` to simplify `typing.Optional` Raw Output: message:"Add `from __future__ import annotations` to simplify `typing.Optional`" location:{path:"/home/runner/work/server-qa/server-qa/test_scripts/pxb/test_helper.py" range:{start:{line:1286 column:21} end:{line:1286 column:29}}} severity:WARNING source:{name:"ruff" url:"https://docs.astral.sh/ruff"} code:{value:"FA100" url:"https://docs.astral.sh/ruff/rules/future-rewritable-type-annotation"} suggestions:{range:{start:{line:6 column:1} end:{line:6 column:1}} text:"from __future__ import annotations\n"}

[rdjson] reported by reviewdog 🐶 Add `from __future__ import annotations` to simplify `typing.Optional` Raw Output: message:"Add `from __future__ import annotations` to simplify `typing.Optional`" location:{path:"/home/runner/work/server-qa/server-qa/test_scripts/pxb/innodb_myrocks_backup_tests.py" range:{start:{line:1162 column:94} end:{line:1162 column:102}}} severity:WARNING source:{name:"ruff" url:"https://docs.astral.sh/ruff"} code:{value:"FA100" url:"https://docs.astral.sh/ruff/rules/future-rewritable-type-annotation"} suggestions:{range:{start:{line:7 column:1} end:{line:7 column:1}} text:"from __future__ import annotations\n"}