fix: modify destroy condition when calling draw

[MinCrohn]

No description provided.

[gemini-code-assist]

Summary of Changes

Hello @MinCrohn, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request addresses a potential runtime error in the drawing mechanism by refining the child destruction logic. It introduces a type check to ensure that the destroy method is only called on valid Element instances, thereby improving the robustness of the rendering process and preventing crashes when unexpected object types are encountered.

Highlights

• Dependency Update: Imported the Element class from ./elements/Element to enable type checking for child elements.
• Bug Fix / Type Safety: Added a type check within the destroyChildren function to ensure that the destroy method is only invoked on objects that are instances of Element, preventing potential errors when non-Element objects are present in the children collection.

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[gemini-code-assist]

Code Review

This pull request addresses a potential runtime error in the draw function by ensuring that destroy() is only called on Element instances. The fix is correct and prevents the application from crashing if the viewport contains non-element children. I've provided one suggestion to improve the maintainability of the code by using duck typing instead of a concrete class check. This would make the destroyChildren function more flexible for future changes.