Correct max_use_ctor_actions default value

Author: jneira

package.json

@@ -249,7 +249,7 @@
           "title": "Max number of constructors",
           "scope": "resource",
           "type": "integer",
-          "default": true,
+          "default": 5,
           "markdownDescription": "Maximum number of `Use constructor <x>` code actions that can appear"
         },
         "haskell.plugin.tactics.config.timeout_duration": {