fix: Adjust font cache to prevent downward spiral on mobile #2850
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===:clipboard: PR Checklist :clipboard:===
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This PR fixes a downward spiral that is possible on platforms with a slow couple frames. The
FontCachefont timeout to 500 ms and makes it configurable as a staticFontCache.FONT_TIMEOUT. This is to help prevent a downward spiral on mobile devices that might take a long while to render a few starting frames causing the cache to repeatedly clear and never recover.