[video_player] code excerpts in README (flutter#6296)

* update README to pull code excerpts from basic

* update version to 2.4.6

* new line

* fix dart issues

* update to match snippet

* re-remove video_player from exclusion list

* add .

* sync readme to snippet

* Roll Flutter from 663bb66 to 723609b (29 revisions) (flutter#6297)

* Roll Flutter from 723609b to 9d78b2f (6 revisions) (flutter#6298)

Co-authored-by: engine-flutter-autoroll <engine-flutter-autoroll@skia.org>

[file_selector] Basic iOS implementation (flutter#5448)

[file_selector] Endorse Linux implementation (flutter#6293)

[file_selector_windows] Fix the problem that the initial directory do…

…es not work after completing a file selection on windows (flutter#5416)

[webview_flutter_platform_interface] Adds missing build params for We…

…bViewWidget (flutter#6279)

[google_maps_flutter] update to correct version (flutter#6289)

* update to correct version

* removed accidental keystroke

[file_selector] Import Linux implementation from FDE (flutter#6292)

[file_selector] Import Linux implementation from FDE (flutter#6292)

[file_selector] Import Linux implementation from FDE (flutter#6292)

[google_maps_flutter] Publish federation (flutter#6204)

Restored the app-facing package to publishable state, using the
newly-published federated mobile implementations.

Part of flutter/flutter#68498