Add ignoreErrors to Sentry

[cocomarine]

Part of https://github.com/RaspberryPiFoundation/digital-editor-issues/issues/1660

• Initially thought it might have something to do with src/hooks/useContainerMinWidth.js which uses ResizeObserver within useLayoutEffect.
  • However, this error predates this file's creation.
  • Also, the stack trace was often useless/empty which seems to indicate it's not a real exception.
• Turned out it's a native browser warning fired when nested ResizeObservers (CodeMirror, design-system-react's tooltip/dropdown positioning, the 3D canvas, resizable panels) react to each other's layout changes within one frame. So, not a real bug in our code.
• Sentry's default GlobalHandlers integration picks it up and reports it as an error even though there's nothing actionable to fix.
• So, Adding the errors (see screenshots) to ignoreErrors to suppress this frequent noise as was recommended by Sentry: https://sentry.io/answers/react-resizeobserver-loop-completed-with-undelivered-notifications/
• The same filter also to be added to editor-standalone Sentry client.