Prevent division by zero and non-finite scaling values when graph
bounds have zero dimensions (width/height = 0) or when container
is improperly sized. Maintains original scale in these invalid
scenarios to ensure consistent behavior.

This issue particularly used to affect headless environments (tests, Node.js)
where containers may have zero height/width, which is less common in
browser contexts.

tbouffard deleted the fix/FitPlugin_fitCenter_improve_robustness branch

This was referenced