Payload Transformation Error

### Version Information

**Hasura Version:**
v2.1.1

**What is the expected behavior?**

I expect Hasura to accept a float in the sample input of the Payload transformation.

**Keywords**
Payload transformation, actions.

**What is the current behavior?**

After saving the action, it erases the float variable from the input and throws and error.

**How to reproduce the issue?**

Create an action with a float variable as an input.
Click on "+ Add Payload Transformation".
Add a float argument in the input.
Edit "Configure Request Body" to a valid response body.

**Screenshots before saving the action**


**Screenshots after saving the action**