fix: remove package.json#packageManager entry (#7087)

Accidentally committed in 4571be3.

Author: ndhoule

package.json

@@ -228,6 +228,5 @@
       "tools/**/*.test.js",
       "tests/**/*.test.cjs"
     ]
-  },
-  "packageManager": "[email protected]+sha512.b2dc20e2fc72b3e18848459b37359a32064663e5627a51e4c74b2c29dd8e8e0491483c3abb40789cfd578bf362fb6ba8261b05f0387d76792ed6e23ea3b1b6a0"
+  }
 }