ASAP Auth mechanism returns an error: secretOrPrivateKey must be an asymmetric key when using RS256

### Expected Behavior

Should be able to authenticate with ASAP enabled end-point and get the response.

### Actual Behavior

I get the following error message

Application Error
Failed to render
```
Error: secretOrPrivateKey must be an asymmetric key when using RS256 at Object.My [as sign]
(file:///Applications/Insomnia.app/Contents/Resources/app.asar/index-535d27ae.js:29:14099) at E
(file:///Applications/Insomnia.app/Contents/Resources/app.asar/index-535d27ae.js:30:471) at Module.Ky
(file:///Applications/Insomnia.app/Contents/Resources/app.asar/index-535d27ae.js:30:496) at kR
(file:///Applications/Insomnia.app/Contents/Resources/app.asar/index-f89f6e08.js:88:5066) at async xR
(file:///Applications/Insomnia.app/Contents/Resources/app.asar/index-f89f6e08.js:84:31972) at async Module.ge
(file:///Applications/Insomnia.app/Contents/Resources/app.asar/request-f947c2e3.js:1:7493) at async Xl
(file:///Applications/Insomnia.app/Contents/Resources/app.asar/index-f89f6e08.js:31:3691) at async je
(file:///Applications/Insomnia.app/Contents/Resources/app.asar/index-f89f6e08.js:30:18468)
```


### Reproduction Steps

1. Set Auth mechanism to ASAP
2. Generate private key as a data-uri
3. Enter ISS, AUD, KID and Private Key
4. Invoke the rest endpoint enabled with ASAP authentication.

### Is there an existing issue for this?

- [X] I have searched the [issue tracker](https://www.github.com/Kong/insomnia/issues) for this problem.

### Additional Information

_No response_

### Insomnia Version

2023.5.8

### What operating system are you using?

macOS

### Operating System Version

13.5.2

### Installation method

download from insomnia.rest

### Last Known Working Insomnia version

2023.2.2

Reproduce the failure with ASAP authentication using the listed steps, then trace the signing path through the bundled entry points index-535d27ae.js and index-f89f6e08.js. Confirm that an endpoint using RS256 and a private-key data URI authenticates successfully without the asymmetric-key error.

Written by the indexing model from the issue text.