Disable formatting on save for Dart and HTML files (#122048)

* Remove "format on save" and "format on type" from directory settings
* Also turn off HTML formatting

.gitignore

@@ -20,7 +20,7 @@
 .classpath
 .project
 .settings/
-.vscode/
+.vscode/*
 
 # Flutter repo-specific
 /bin/cache/
@@ -130,3 +130,4 @@ app.*.symbols
 !**/ios/**/default.perspectivev3
 !/packages/flutter_tools/test/data/dart_dependencies_test/**/.packages
 !/dev/ci/**/Gemfile.lock
+!.vscode/settings.json

.vscode/settings.json

+// VSCode workspace settings that are shared among all users of this project.
+// This only affects subdirectories of this project.
+{
+    // VSCode formats files on save by default. Since Flutter source code is
+    // hand-formatted, the default settings are changed to prevent inadvertent
+    // reformatting of code.
+    "editor.formatOnSave": false,
+    "editor.formatOnType": false,
+
+    "html.format.enable": false
+}
\ No newline at end of file