Request textDocument/completion failed on custom code

**Describe the bug**
Hello, I'm trying to create a decorator that will "copy the kwarg types" of a function to another (code below).
However, I am facing the following issue:
```
[Error - 9:52:33 PM] Request textDocument/completion failed.
Message: Request textDocument/completion failed with message: Debug Failure. False expression.
Code: -32603
```

**Code or Screenshots**
If possible, provide a minimal, self-contained code sample (surrounded by triple back ticks) to demonstrate the issue. The code should define or import all referenced symbols.

```python
from typing import Protocol, Generic, ParamSpec, TypeVar, Any, Callable

F1 = ParamSpec("F1")
F2 = ParamSpec("F2")
R = TypeVar("R", covariant=True)

class FunctionWithKwargs(Protocol, Generic[F1, F2, R]):
def __call__(*args: F2.args, **kwargs: F1.kwargs) -> R: ...

def copy_kwargs_types(
_: Callable[F1, Any],
) -> Callable[[Callable[F2, R]], FunctionWithKwargs[F1, F2, R]]:
return lambda x: x # type: ignore

def f(*, b: int, c: str) -> None:
pass

@copy_kwargs_types(f)
def g(a, **kwargs) -> None:
...

g() # <- Issue happens here
```

**VS Code extension or command-line**
I am running the VSCode extension.

Reproduce the sample in the VS Code extension and trigger completion at the marked g() call. Start by tracing the textDocument/completion request associated with the reported Debug Failure. Done means completion no longer crashes on this decorator, ParamSpec, and Protocol combination; validate the behavior with the supplied self-contained example.

Written by the indexing model from the issue text.