fixed constant updates in empty scenes #211

Job	Run time
🕸 Web (wasm32, template_debug)	1m 47s
🐧 Linux (x86_64, editor)	51s
🕸 Web (wasm32, template_release)	1m 41s
🐧 Linux (x86_64, template_release)	51s
🤖 Android (arm32, template_debug)	1m 3s
🍏 MacOS (universal, editor)	1m 31s
🤖 Android (arm32, template_release)	1m 5s
🍏 MacOS (universal, template_release)	2m 4s
🏁 Windows (x86_64, editor)	2m 22s
🤖 Android (arm64, template_debug)	48s
🏁 Windows (x86_64, template_release)	2m 2s
🤖 Android (arm64, template_release)	40s
🤖 Android (x86_32, template_debug)	51s
🤖 Android (x86_32, template_release)	50s
🤖 Android (x86_64, template_debug)	43s
🤖 Android (x86_64, template_release)	45s
📦 Collect GDExtension binaries	10s
	20m 4s

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