[inductor] fix max_pool2d with ceil mode (#94887)
Fixes #94775
When ceil mode turns on, max_pool2d has a bug allowing a sliding window to be entirely off bounds. This PR restricts sliding windows to start within the input or left padding.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/94887
Approved by: https://github.com/jgong5, https://github.com/EikanWang, https://github.com/jansel, https://github.com/desertfire
