ci: suppress pytest streaming output in CI (#36092)

Reduce CI log noise by suppressing pytest's per-test dot/verbose
streaming output. The `_test.yml` workflow now passes `PYTEST_EXTRA=-q`
to `make test`, which overrides the default verbosity with quiet mode —
failures still print in full, but the thousands of `.......` progress
lines are gone. Local `make test` is unaffected since `PYTEST_EXTRA`
defaults empty.

## Changes
- Add `PYTEST_EXTRA ?=` variable to all 21 package Makefiles and inject
it into each `test` target's pytest invocation
- Pass `PYTEST_EXTRA=-q` in `_test.yml` for both the main test step and
the min-version retest step