Update v3/src/hooks/use-overlay-bounds.ts - return null rather than emppty object literal
Update v3/src/hooks/use-overlay-bounds.ts - return null rather than emppty object literal

Co-authored-by: Kirk Swenson <f94024db5273851678a8b3fa54202122f2521897@users.noreply.github.com>
concord-consortium/codap,concord-consortium/codap,concord-consortium/codap,concord-consortium/codap,concord-consortium/codap