Fixes for memory

[yorickvP]

• Fixes MemorizedFunc.__call__ should return _T instead of MemorizedResult[_T] #1
• Fixes:

@mem.cache(ignore=['x'])
def hello(x):
    return 1

[phi-friday]

Thanks for the PR.
The docstring says it returns a MemorizedFunc object, so I thought it did, but it doesn't.

But the PR is not passing through the static analyzer.
Could you please fix it so that I don't have the problem when I use uv run poe check?

[yorickvP]

Should be fixed!