Haddock's support for VDQ looks incomplete
## Summary
If you generate a haddock for the following code:
```haskell
test1
:: forall a
-- ^ A
-> b
-- ^ B
-> c
-- ^ C
test1 _ _ = undefined
test2
:: a
-- ^ A
-> forall b
-- ^ B
-> c
-- ^ C
test2 _ _ = undefined
test3
:: a
-- ^ A
-> Monad m
=> forall b
-- ^ B
-> m c
-- ^ C
test3 _ = undefined
```
You'll get this:
{width=705 height=316}
As you can see, type arguments are not in separate lines and their description is ignored.
## Expected behavior
Treat type arguments the same way as term arguments.
## Environment
* GHC version used: 9.11.20240719 (same behavior with 9.10.1).
issue