Recursive @var definitions cause the compiler to stall forever

[bertbarabas]

Describe the bug I accidently made a recursive @var function i.e. where all it does is call itself when I really wanted to return the str of the _ private version of the value. This caused reflex run compilation to pause at step 3 and never complete.

To Reproduce any trivial @var where all it does is return itself. Steps to reproduce the behavior:

@rx.var
def foo(self) -> str:
    return self.foo

Expected behavior A clear and concise description of what you expected to happen.

Raise a proper error that a vars cannot have itself as a dependency

Specifics (please complete the following information):

• Python Version: 3.12.4
• Reflex Version: 0.5.9
• OS: Ubuntu 22.04.3 on Windows 11 WSL 2
• Browser (Optional):

[Lendemor]

(I edited return foo to return self.foo in the code snippet)