[900] Add missing "type" to applicator meta-schema

Author: ssilverman

meta/applicator.json

@@ -7,6 +7,7 @@
     "$dynamicAnchor": "meta",
 
     "title": "Applicator vocabulary meta-schema",
+    "type": ["object", "boolean"],
     "properties": {
         "prefixItems": { "$ref": "#/$defs/schemaArray" },
         "items": { "$dynamicRef": "#meta" },