Disable .egg-info tests via slow-tests feature on Windows and macOS (#10872)

## Summary

These are super slow on Windows and it's not critical to test them on
that platform. Let's just do the lazy thing.

.github/workflows/ci.yml

@@ -228,7 +228,8 @@ jobs:
       - name: "Cargo test"
         run: |
           cargo nextest run \
-            --features python-patch \
+            --no-default-features \
+            --features python,python-managed,pypi,git,performance,crates-io \
             --workspace \
             --status-level skip --failure-output immediate-final --no-fail-fast -j 12 --final-status-level slow
 
@@ -272,8 +273,13 @@ jobs:
           # Avoid permission errors during concurrent tests
           # See https://github.com/astral-sh/uv/issues/6940
           UV_LINK_MODE: copy
+        shell: bash
         run: |
-          cargo nextest run --no-default-features --features python,pypi,python-managed --workspace --status-level skip --failure-output immediate-final --no-fail-fast -j 20 --final-status-level slow
+          cargo nextest run \
+            --no-default-features \
+            --features python,pypi,python-managed \
+            --workspace \
+            --status-level skip --failure-output immediate-final --no-fail-fast -j 20 --final-status-level slow
 
   # Separate jobs for the nightly crate
   windows-trampoline-check: