Improve Circle Connectivity Algorithm Performance and Code Readability

[iham3454]

Hii @kamyu104 I propose improving the (Python/check-if-the-rectangle-corner-is-reachable.py) circle connectivity solution by optimizing performance, using a more efficient Union-Find with path compression and union by rank, reducing redundant overlap checks, and refactoring the code for better modularity and maintainability. I'd also add unit tests to ensure correctness. I'd be happy to contribute to this and would appreciate if you could assign me to the task.