[BUG] Dialogflow - Detect Intent (the "path" argument is undefined)

Describe the bug

As a user, I’m unable to use the Dialogflow - Detect Intent pre-built action. Even with static query text, an error appears:

The "path" argument must be of type string or an instance of Buffer or URL. Received undefined

To Reproduce Steps to reproduce the behavior:

1. Create a new workflow
2. Add a Dialogflow - Detect Intent action
3. Define a Query Input that includes a text key and value
4. See error

Expected behavior I expect a Dialogflow detect intent API to be made with the provided query input.

Screenshots

Additional context Slack post: https://pipedream-users.slack.com/archives/CPTJYRY5A/p1657131166677999

[vunguyenhung]

Thank you for resolving this issue @feyzullah! I think for the Query Input, we can have it as object, and we can add a JSON example to the prop description. For example:

Query Input property. For example, `{"text": "hi what are you doing", "languageCode": "en-EN"}`. See [Query Input API Doc](https://googleapis.dev/nodejs/dialogflow/latest/google.cloud.dialogflow.v2beta1.IQueryInput.html)

[vunguyenhung]

@feyzullah seems OK to me! I think we can go ahead with this!