Align the node with the grid vertices/points on the graph workspace.

[GREENRAT-K405]

Recording.2025-12-30.232017.mp4

I have made the node snap to the nearest grid point.
Simply turning on SnapGrid was not suffiecient (it would snap the centre of node to a grid point rather than the corners of node), that is why I had to add little stricter logic to snap the node properly with grid.

[GREENRAT-K405]

@pradeeban please review the changes.

[GREENRAT-K405]

@pradeeban I had added some logs in my previous PR to figure out the errors, it failed in the CI workflow. It is fixed now, the CI is working fine!

[pradeeban]

Thanks. Why are you commenting out some console.error logs?

[GREENRAT-K405]

@pradeeban actually the errors/logs I have commented out are the logs I had added in PR#251 (the previous PR) because I was checking where the abort error were occurring. These logs are places in try catch blocks of "save", "save as" and "open". I believe these aren't actual errors, I commented them out because they were failing the CI pipeline. I realised this after I pushed the code and when github CI script notified me.

In short, these were the logs I had added just for testing previously to find where the "abort" error was occuring.