Lost ability to open terminal by clicking on empty space in tab bar

### What Happened?

Up until recently it was possible to open a new terminal tab by double clicking on empty tab bar space. This is no longer possible, nothing happens. As the empty tab space is larger than the plus button, this is a UX regression.

### Steps to Reproduce

1. Open the terminal
2. Double click on the space between the tabs and the "restore" button on the right
3. Nothing happens

### Expected Behavior

1. Open the terminal
2. Double click on the space between the tabs and the "restore" button on the right
3. a new tab is created

### OS Version

7.x (Horus)

### Session Type

Classic Session (X11, This is the default)

### Software Version

Latest release (I have run all updates)

### Log Output

_No response_

### Hardware Info
AMD graphics card