chore: trigger the site only on its own inputs

The site deploy still triggered on seven scripts it stopped importing
when the pack and site modules were split, and on the test suite it
never runs, so a builder-only push rebuilt the site for nothing. The
triggers now match the build's import closure in both directions.

.github/workflows/deploy-site.yml

@@ -8,28 +8,23 @@ on:
       - "emulators/**"
       - "provenance/**"
       - "wiki/**"
-      # Every script the build runs or imports (tests/test_workflow_paths.py).
+      # Every script the build runs or imports, and no other
+      # (tests/test_workflow_paths.py).
       - "scripts/artifacts.py"
-      - "scripts/auto_fetch.py"
       - "scripts/common.py"
       - "scripts/cross_reference.py"
       - "scripts/crypto_verify.py"
       - "scripts/derivations.py"
-      - "scripts/deterministic_zip.py"
       - "scripts/dumpcatalog.py"
-      - "scripts/generate_pack.py"
       - "scripts/generate_readme.py"
       - "scripts/generate_site.py"
       - "scripts/hashing.py"
       - "scripts/largefiles.py"
-      - "scripts/list_platforms.py"
-      - "scripts/manifestselect.py"
       - "scripts/nativemode.py"
       - "scripts/packextras.py"
       - "scripts/packpaths.py"
       - "scripts/packreadme.py"
       - "scripts/packresolve.py"
-      - "scripts/packverify.py"
       - "scripts/profile_sync.py"
       - "scripts/provenance_report.py"
       - "scripts/refresh_data_dirs.py"
@@ -41,7 +36,6 @@ on:
       - "scripts/siterender.py"
       - "scripts/sitesources.py"
       - "scripts/sitewrite.py"
-      - "scripts/slot.py"
       - "scripts/slots.py"
       - "scripts/split_pack.py"
       - "scripts/truth.py"
@@ -52,7 +46,6 @@ on:
       - "scripts/verify.py"
       - "scripts/ziptools.py"
       - "schemas/**"
-      - "tests/**"
       - "docs_assets/**"
       - "install/**"
       - "install.py"