Application Error - Update

### Expected Behavior

Render Failure: Cannot read properties of undefined (reading 'lastIndexOf')

TypeError: Cannot read properties of undefined (reading 'lastIndexOf')
at c (https://insomnia-app.local/assets/trial.start-Deej-aEL.js:197:180038)
at Array. (https://insomnia-app.local/assets/trial.start-Deej-aEL.js:197:180663)
at https://insomnia-app.local/assets/trial.start-Deej-aEL.js:197:176760
at g (https://insomnia-app.local/assets/trial.start-Deej-aEL.js:197:174864)
at n (https://insomnia-app.local/assets/trial.start-Deej-aEL.js:197:175065)
at xo.foldCode (https://insomnia-app.local/assets/trial.start-Deej-aEL.js:197:175840)
at https://insomnia-app.local/assets/trial.start-Deej-aEL.js:1208:1357
at https://insomnia-app.local/assets/trial.start-Deej-aEL.js:1208:1711
at https://insomnia-app.local/assets/trial.start-Deej-aEL.js:174:40361
at sl (https://insomnia-app.local/assets/chunk-WY5IRSCW-Dy6m2SZ7.js:8:24314)
at _n (https://insomnia-app.local/assets/chunk-WY5IRSCW-Dy6m2SZ7.js:8:42479)
at sf (https://insomnia-app.local/assets/chunk-WY5IRSCW-Dy6m2SZ7.js:8:41288)
at Gt (https://insomnia-app.local/assets/chunk-WY5IRSCW-Dy6m2SZ7.js:8:40323)
at ra (https://insomnia-app.local/assets/chunk-WY5IRSCW-Dy6m2SZ7.js:8:36926)
at zt (https://insomnia-app.local/assets/chunk-WY5IRSCW-Dy6m2SZ7.js:6:3258)
at https://insomnia-app.local/assets/chunk-WY5IRSCW-Dy6m2SZ7.js:8:34291

### Actual Behavior

The error occurred after updating to version v12.5.0

### Reproduction Steps

The error occurred after updating to version v12.5.0
1 - Create endpoint
2 - Acces tab Header
3 - Acess tab Body

### Is there an existing issue for this?

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

### Which sync method do you use?

- [ ] Git sync.
- [ ] Insomnia Cloud sync.
- [x] Local only

### Additional Information

_No response_

### Insomnia Version

v12.5.0

### What operating system are you using?

macOS

### Operating System Version

macOs Tahoe 26.3.1

### Installation method

download from insomnia

### Last Known Working Insomnia version

_No response_