Revert "Remove useless * keywords" and do not let users change action keywords of Explorer

Author: Jack251970

Plugins/Flow.Launcher.Plugin.Explorer/plugin.json

@@ -2,8 +2,12 @@
   "ID": "572be03c74c642baae319fc283e561a8",
   "ActionKeywords": [
     "*",
-    "doc:"
+    "doc:",
+    "*",
+    "*",
+    "*"
   ],
+  "AllowModifyActionKeywords": false,
   "Name": "Explorer",
   "Description": "Find and manage files and folders via Windows Search or Everything",
   "Author": "Jeremy Wu",