rename 'full restart' to 'hot restart' (#17408)

dev/devicelab/bin/tasks/commands_test.dart

@@ -81,7 +81,7 @@ void main() {
       await reloadEndingText;
       await driver.drive('none');
       final Future<String> restartStartingText =
-        stdout.stream.firstWhere((String line) => line.endsWith('full restart...'));
+        stdout.stream.firstWhere((String line) => line.endsWith('hot restart...'));
       final Future<String> restartEndingText =
         stdout.stream.firstWhere((String line) => line.contains('Restart performed in '));
       print('test: pressing "R" to perform a full reload...');

packages/flutter_tools/lib/src/commands/run.dart

@@ -151,7 +151,7 @@ class RunCommand extends RunCommandBase {
       ..addOption('pid-file',
         help: 'Specify a file to write the process id to.\n'
               'You can send SIGUSR1 to trigger a hot reload\n'
-              'and SIGUSR2 to trigger a full restart.',
+              'and SIGUSR2 to trigger a hot restart.',
       )
       ..addFlag('resident',
         negatable: true,

packages/flutter_tools/lib/src/run_hot.dart

@@ -435,7 +435,7 @@ class HotRunner extends ResidentRunner {
   Future<OperationResult> restart({ bool fullRestart: false, bool pauseAfterRestart: false }) async {
     if (fullRestart) {
       final Status status = logger.startProgress(
-        'Performing full restart...',
+        'Performing hot restart...',
         progressId: 'hot.restart'
       );
       try {