Tabs are half baked

### Expected Behavior

First of all, if I wanted tabs I would use Postman. Not having clunky tabs is one of the reasons why I love Insomnia, so please please provide an option to disable tabs.

Secondly, clicking on a folder to open/close it opens a tab on that folder. That's terrible UX, I try to keep all my folders closed and only open the ones I'm currently using otherwise I get lost, that means the tabs bar quickly gets filed with folders.

Thirdly, something changed around updating folder variables. Now if I go to a folder and update the variables and just click on anther request, these variables are not saved. The only way I've found I can make the changes to save is by making the variable changes and then click somewhere else in the json first before clicking out of the folder.

### Actual Behavior

There should be a setting to allow users to disable tabs.
Folders should no open a tab when the user is just expanding or contracting the folder. I would suggest that tabs should only open on double-click. Please.
Folder variable changes should apply seemlessly.

### Reproduction Steps

_No response_

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

### Additional Information

_No response_

### Insomnia Version

11.0.0

### What operating system are you using?

Windows

### Operating System Version

macOS Sequoia 15.3.1

### Installation method

Download

### Last Known Working Insomnia version

10.3.1