develop
Fix #23901: Removed tslint and apply eslint (#26598)
Fix part of #23496: Enforce strict typescript checks for group 17,18,19,23 (#25936)
Fix part of #25941: Clean up legacy embedded <style> tags from HTML templates removing inconsistency of first 30 files (#26767)
Fix #7092: Remove downgradeComponent (#21903)
Fix #15455: Make schema-validators context aware (#26029)
Fix part of #25997: Replace core-js/es7/reflect with reflect-metadata and consolidate to single import location (#26475)