Friendlier flutter tool messages for dynamic mode (#26378)

packages/flutter_tools/lib/src/build_info.dart

diff --git a/packages/flutter_tools/lib/src/build_info.dart b/packages/flutter_tools/lib/src/build_info.dart
index f4d16db..7e4152a 100644
--- a/packages/flutter_tools/lib/src/build_info.dart
+++ b/packages/flutter_tools/lib/src/build_info.dart
@@ -119,6 +119,7 @@
   bool get supportsEmulator => isEmulatorBuildMode(mode);
   bool get supportsSimulator => isEmulatorBuildMode(mode);
   String get modeName => getModeName(mode);
+  String get friendlyModeName => getFriendlyModeName(mode);
 
   BuildInfo withTargetPlatform(TargetPlatform targetPlatform) =>
       BuildInfo(mode, flavor,
@@ -142,6 +143,10 @@
 
 String getModeName(BuildMode mode) => getEnumName(mode);
 
+String getFriendlyModeName(BuildMode mode) {
+  return snakeCase(getModeName(mode)).replaceAll('_', ' ');
+}
+
 // Returns true if the selected build mode uses ahead-of-time compilation.
 bool isAotBuildMode(BuildMode mode) {
   return mode == BuildMode.profile || mode == BuildMode.release;