Generic ParamSpec on class produces `reportCallIssue` error after conditional check `len(args) == x` or `len(args) != x`

**Describe the bug**

The below code produces the error `Arguments for ParamSpec "P@MyClass" are missing (reportCallIssue)` on the second call to the method `MyClass.func()` within `MyClass.__call__()`.

Code sample in [pyright playground](https://pyright-play.net/?code=MYGwhgzhAECyCeBhcUDaAqdAFAugLgChpjoATAUwDNoB9G4MEEOgCgnJEoBpp0wAnAOYQ80LADoBwnpgDWAdykix4hUoCU0ALQA%2BaAEsAdgBdCJc7WgBeaO07jKAV0PAWfIRBno1HzdADE0IYA9tAADvD8%2BoIAFsbQ5Pz8wfxEFsT61CDkhiwa1jYADGbpFmFRJiwA5AASHCChAOopIKQAhFXqaen85MaO-Ia2HJQOzq7u0rzeir7EgRFRsfGJyandZFTQTi5sIzJKohJKXj7CR6qzwpq6BiYlPX0DQ4UEQA)

```python
class MyClass[**P]:
def __call__(self, *args: P.args, **kwargs: P.kwargs) -> int:
_ = self.func(*args, **kwargs) # no pyright error
if len(args) == 0:
print('Hello World!')
return self.func(*args, **kwargs) # pyright error

def func(self, *args: P.args, **kwargs: P.kwargs) -> int:
return 0
```

I did some testing with different conditions in place of `len(args) == 0` to better understand what does/doesn't produce the same error:

- Produces same error:
- `len(args) != 0`
- `len(args) == 1`
- `len(args) != 1`
- `len(args) == 314`
- `len(args) != 314`
- Doesn't error:
- `len(kwargs) == 0`
- `len(args) > 10`
- `len(args) >= 10`
- `len(args) < 10`
- `len(args) <= 10`

**Workaround**

This bug can be worked around by simply assigning the result of the equality check to a variable and then using that variable in the conditional, e.g.:

```python
class MyClass[**P]:
def __call__(self, *args: P.args, **kwargs: P.kwargs) -> int:
_ = self.func(*args, **kwargs) # no pyright error
comp = len(args) == 0
if comp:
print('Hello World!')
return self.func(*args, **kwargs) # no pyright error

def func(self, *args: P.args, **kwargs: P.kwargs) -> int:
return 0
```

**VS Code extension or command-line**

I am running pyright via the command line, using version 1.1.402.

Start with the linked Pyright playground example and reproduce it using the command-line version 1.1.402. Trace the ParamSpec handling for the second self.func call after equality checks on len(args), then add a regression test for the failing conditions and confirm the workaround behavior remains correct.

Written by the indexing model from the issue text.