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Fix part of #25997: Replace core-js/es7/reflect with reflect-metadata and consolidate to single import location (#26475)
Fix part of #25941: Clean up legacy embedded <style> tags from HTML templates removing inconsistency first 20 files (#26326)
Fix part of #23496: Enable strict checks for group 1 files (#23649)
Apply prettier 2 (#19862)
Fix #17117: Fix CodeQL sanitization issues. (#23807)