fix(e2e): add uv-managed python binary glob to forward proxy L7 test

The base sandbox image installs Python via uv at
/sandbox/.uv/python/*/bin/python*, but the proxy resolves binary
identity via /proc/PID/exe (the real path, not the symlink). The test
policy only listed /usr/bin/python* and /usr/local/bin/python*, so OPA
denied the connection at L4 before L7 evaluation could run.

Author: johntmyers

e2e/rust/tests/forward_proxy_l7_bypass.rs

@@ -156,6 +156,7 @@ network_policies:
       - path: /usr/bin/curl
       - path: /usr/bin/python*
       - path: /usr/local/bin/python*
+      - path: /sandbox/.uv/python/*/bin/python*
 "#
     );
     file.write_all(policy.as_bytes())