Add extendBody parameter to Scaffold, body MediaQuery reflects BAB height (#27973)


diff --git a/AUTHORS b/AUTHORS
index 2b9f1a8..d5a6f57 100644
--- a/AUTHORS
+++ b/AUTHORS
@@ -37,3 +37,4 @@
 Marco Scannadinari <m@scannadinari.co.uk>
 Frederik Schweiger <mail@flschweiger.net>
 Martin Staadecker <machstg@gmail.com>
+Igor Katsuba <katsuba.igor@gmail.com>