24142 [flutter_releases] Flutter 1.26.0-17.2.pre Beta Engine Cherrypicks (cla: yes, platform-android)

24146 fixes android deeplink query paremeter null crashes (cla: yes, platform-android, waiting for tree to go green)

24150 [web] Fix exception when using a keyboard (cla: yes, platform-web, waiting for tree to go green)

24152 Fix use of multiple shells w/ different snapshots (affects: engine, cla: yes, platform-android, platform-fuchsia, platform-ios, platform-linux, platform-macos, platform-windows)

24153 [web] Fix svg stroke when style is not provided (cla: yes, platform-web)

24157 [metal] Darwin unified external metal textures (cla: yes, platform-ios, waiting for tree to go green)