Locate ruff executable in 'bin' directory as installed by 'pip install --target'.

[jaraco]

Fixes #11246

Summary

This change adds an intermediate additional search path for find_ruff_bin.

I would have added this path as the last one, except that the last one is the one reported to the user, so I made this one second to last.

Test Plan

It's shown to work with this command:

 ~ @ pip-run git+https://github.com/jaraco/ruff@feature/honor-install-target-bin -- -m ruff --version
ruff 0.4.4

I tried running the same command on Windows, which should work in theory, but building ruff from source on Windows is complicated. Even after installing Rust, ruff fails to build when libmimalloc-sys fails to build because gcc isn't installed (and the error message points to a broken anchor). I was really hoping Rust would get us away from the Windows as second-class-citizen model :(.

[jaraco]

Windows test failures are reported in #11439.

[github-actions]

ruff-ecosystem results

Linter (stable)

✅ ecosystem check detected no linter changes.

Linter (preview)

ℹ️ ecosystem check detected linter changes. (+2 -0 violations, +0 -0 fixes in 1 projects; 43 projects unchanged)

python/typeshed (+2 -0 violations, +0 -0 fixes)

ruff check --no-cache --exit-zero --ignore RUF9 --output-format concise --preview --select E,F,FA,I,PYI,RUF,UP,W

+ stdlib/typing.pyi:326:10: PYI001 Name of private `TypeVar` must start with `_`
+ stdlib/typing.pyi:805:1: PYI042 Type alias `_get_type_hints_obj_allowed_types` should be CamelCase

Changes by rule (2 rules affected)

code	total	+ violation	- violation	+ fix	- fix
PYI001	1	1	0	0	0
PYI042	1	1	0	0	0

Formatter (stable)

✅ ecosystem check detected no format changes.

Formatter (preview)

✅ ecosystem check detected no format changes.

[charliermarsh]

👍 Thanks. I moved it back to last and decided to use the sysconfig.get_path("scripts") path for the error.