Improve import time of various stdlib modules

[ofek]

Feature or enhancement

Proposal:

Following on from #118761 (comment), further improvements can be made to import times.

Notes

We should backport ensure_lazy_imports tests for the 3.14 improvements, to help guard against regressions.

Linked PRs

• gh-137855: Improve import time of sqlite3 #131796
• gh-137855: email.quoprimime removing re import #132046
• gh-137855: Optimise import time for textwrap #131956
• gh-137855: Lazy import inspect module in dataclasses #144387
• gh-137855: Improve import time of pathlib #146327
• gh-137855: Improve import time of dataclasses by lazy importing re and copy modules #148379