Support JSON as the value in HTTP headers

### Describe the Bug with repro steps

Adding a JSON as the value in headers using designer throws a parsing error but the same is achievable using Codeview since we can essentially pass a JSON string as the value there.

Creating this so we can check if we can do a quick check if the value is a JSON, if so, stringify it otherwise keep it as it. That will enable being able to add JSON value as the string in headers

### What type of Logic App Is this happening in?

Consumption (Portal)

### Which operating system are you using?

Windows

### Did you refer to the TSG before filing this issue? https://aka.ms/lauxtsg

Yes

### Workflow JSON

```json

```

### Screenshots or Videos

_No response_

### Browser

NA

### Additional context

_No response_