Revert "Remove IE11 polyfills and update browser support policy" GitOrigin-RevId: fa44a6bfa796d191446956e94d9e533a70e59da4
Remove IE11 polyfills and update browser support policy GitOrigin-RevId: 9ab9513ecf97fc565a1d2620f9785a64bd16b766
GitOrigin-RevId: 731f86a2b07cd2c3189e6ca86bba9fbbc913f429