Allow $PATH into the test env so browser launchers can be found

Author: shs96c

.bazelrc

@@ -25,12 +25,13 @@ build --noexperimental_sandbox_default_allow_network
 
 # pass environment variables to the test environment
 build --test_env=CI
-build --test_env=GITHUB_ACTIONS
-build --test_env=TRAVIS
-build --test_env=DISPLAY
-build --test_env=MOZ_HEADLESS
 build --test_env=DASHBOARD_URL
+build --test_env=DISPLAY
+build --test_env=GITHUB_ACTIONS
 build --test_env=LOCALAPPDATA
+build --test_env=MOZ_HEADLESS
+build --test_env=PATH  # Remove once browser pinning works
 build --test_env=SELENIUM_BROWSER
+build --test_env=TRAVIS
 
 test --test_timeout=180