Update gridOutput.js

[southwest-git]

Resolves #7259

Changes:

Some shapes located outside of the canvas and the current check in _gridMap only applies to positive locX and locY but not negative values. The fix is to check for negative values and hence avoiding a negative indexing to an array which causes the issue.

Screenshots of the change:

PR Checklist

• npm run lint passes
• Inline reference is included / updated
• Unit tests are included / updated

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[ksen0]

Hi @himanshuukholiya I saw you were active on the related issue here #7259, can you check if this is still relevant? The issue seems to be marked as resolved. Thanks!