Revert "Roll Flutter from 7ddf42eae5ee to 0d91c0343bdc (58 revisions) (#6948)"

This reverts commit b89e4fc2dbd0e496de9ef0eeae92fdd1ca613d4c.
diff --git a/.ci/flutter_master.version b/.ci/flutter_master.version
index 99034c6..2a1446e 100644
--- a/.ci/flutter_master.version
+++ b/.ci/flutter_master.version
@@ -1 +1 @@
-0d91c0343bdcb950c9ffadda8051fe44446ec291
+7ddf42eae5ee9b9d770ce40aae362b0fc2ca1005