chore(knip): drop the stale playwright ignore for the deleted hero script

The root-scripts workspace ignore existed only for
scripts/hero-composer-dom-continuity.mjs; apps/web declares its own
playwright dependency for the e2e lane.

knip.json

@@ -27,9 +27,6 @@
         "scripts/**/*.ts",
         "scripts/**/*.mjs",
         "scripts/**/*.cjs"
-      ],
-      "ignoreDependencies": [
-        "playwright"
       ]
     },
     "examples": {