Update navigation and clean up widgets in vyuh_feature_developer package #44

Job	Run time
publish_dart_packages (packages/system/vyuh_extension_content)	1m 23s
publish_dart_packages (packages/system/vyuh_cache)	1m 13s
publish_dart_packages (packages/system/vyuh_core)	1m 31s
publish_dart_packages (packages/system/vyuh_feature_developer)	1m 21s
publish_dart_packages (packages/system/vyuh_feature_system)	1m 26s
publish_dart_packages (packages/system/vyuh_extension_script)	1m 27s
publish_dart_packages (packages/sanity/flutter_sanity_portable_text)	1m 26s
publish_dart_packages (packages/sanity/sanity_client)	1m 31s
	11m 18s

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