fix(react): move @videojs/icons to devDependencies

Icons are bundled into dist/ at build time as relative imports, so
consumers don't need @videojs/icons installed separately. Keeping it
as a runtime dependency caused ETARGET errors because the alpha version
wasn't published to npm.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

packages/react/package.json

@@ -47,12 +47,12 @@
   },
   "dependencies": {
     "@videojs/core": "workspace:*",
-    "@videojs/icons": "workspace:*",
     "@videojs/store": "workspace:*",
     "@videojs/utils": "workspace:*"
   },
   "devDependencies": {
     "@testing-library/react": "^16.3.0",
+    "@videojs/icons": "workspace:*",
     "@types/react": "^19.2.7",
     "jsdom": "^26.1.0",
     "react": "^19.2.1",