docs(requirements): mirror .. versionchanged:: 26.3 into requirements.rst - #1208

Good catch, though I'm not very happy with that comment and now it's in two places. :) This was preserved before 26.2, it's only the dedicated pickle support in 26.2 that broke it. Maybe we should just consider it a bug and drop both? Or add "the dedicated picked support introduced in 26.2 did not preserve this, now it is included" or something like that?

Reworded the note to the regression framing you suggested:

The dedicated pickle support introduced in 26.2 did not preserve the specifier's explicit prereleases override; it is now included again.

Two follow-ups, your call:

• The docstring (requirements.py, from fix: preserve Requirement specifier prereleases across pickle #1206) still has the old "now preserved across a pickle round trip" wording — happy to sync it to match in this PR so the two stay consistent.
• Or, if you'd rather treat the 26.2 behavior as a plain bug and not document it at all, I'll close this and send a one-liner dropping the note from the docstring too.

requirements.rst is hand-maintained and already mirrors the docstring's 23.2/26.2 blocks, so I leaned toward keeping the mirror — but either direction is fine with me.

happy to sync it to match

That sounds good.

Pushed the docstring sync so requirements.py and requirements.rst now use the same regression framing for the 26.3 note. Thanks!