Remove all cairo usage from RunLoop and fix #334 (open/close editor c…#337

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rehans wants to merge 2 commits intosteinbergmedia:developfrom rehans:develop

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Commits on Feb 1, 2025

Remove all cairo usage from RunLoop and fix steinbergmedia#335 (open/close editor crash)
rehans
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Commits on Feb 2, 2025

Check for end iterator before using it
rehans
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