Don't show legacy welcome message when analytics are disabled (#140956)

The legacy welcome message would be printed even if `CI=true` confusing
parsers of the output.

This fixes: https://github.com/flutter/flutter/issues/139737

---------
Co-authored-by: eliasyishak <42216813+eliasyishak@users.noreply.github.com>

packages/flutter_tools/lib/src/base/process.dart

@@ -623,7 +623,9 @@ Future<int> exitWithHooks(int code, {required ShutdownHooks shutdownHooks}) asyn
       messenger.shouldDisplayLicenseTerms();
 
   // Prints the welcome message if needed for legacy analytics.
-  globals.flutterUsage.printWelcome();
+  if (!(await globals.isRunningOnBot)) {
+    globals.flutterUsage.printWelcome();
+  }
 
   // Ensure that the consent message has been displayed for unified analytics
   if (globals.analytics.shouldShowMessage) {

packages/flutter_tools/lib/src/reporting/usage.dart

@@ -428,6 +428,7 @@ class TestUsage implements Usage {
   final List<dynamic> exceptions = <dynamic>[];
   final List<TestTimingEvent> timings = <TestTimingEvent>[];
   int ensureAnalyticsSentCalls = 0;
+  bool _printedWelcome = false;
 
   @override
   bool enabled = true;
@@ -438,6 +439,9 @@ class TestUsage implements Usage {
   @override
   String get clientId => 'test-client';
 
+  /// Confirms if the [printWelcome] method was invoked.
+  bool get printedWelcome => _printedWelcome;
+
   @override
   Future<void> ensureAnalyticsSent() async {
     ensureAnalyticsSentCalls++;
@@ -447,7 +451,9 @@ class TestUsage implements Usage {
   Stream<Map<String, dynamic>> get onSend => throw UnimplementedError();
 
   @override
-  void printWelcome() { }
+  void printWelcome() {
+    _printedWelcome = true;
+  }
 
   @override
   void sendCommand(String command, {CustomDimensions? parameters}) {

packages/flutter_tools/test/general.shard/runner/runner_test.dart

@@ -7,6 +7,7 @@ import 'dart:async';
 import 'package:file/memory.dart';
 import 'package:flutter_tools/runner.dart' as runner;
 import 'package:flutter_tools/src/artifacts.dart';
+import 'package:flutter_tools/src/base/bot_detector.dart';
 import 'package:flutter_tools/src/base/file_system.dart';
 import 'package:flutter_tools/src/base/io.dart' as io;
 import 'package:flutter_tools/src/base/net.dart';
@@ -33,6 +34,7 @@ void main() {
 
   group('runner', () {
     late FakeAnalytics fakeAnalytics;
+    late TestUsage testUsage;
 
     setUp(() {
       // Instead of exiting with dart:io exit(), this causes an exception to
@@ -57,6 +59,8 @@ void main() {
         fs: fileSystem,
         fakeFlutterVersion: FakeFlutterVersion(),
       );
+
+      testUsage = TestUsage();
     });
 
     tearDown(() {
@@ -323,6 +327,27 @@ void main() {
         HttpClientFactory: () => () => FakeHttpClient.any(),
       });
     });
+
+    testUsingContext('do not print welcome on bots', () async {
+        io.setExitFunctionForTests((int exitCode) {});
+
+        await runner.run(
+          <String>['--version', '--machine'],
+          () => <FlutterCommand>[],
+          // This flutterVersion disables crash reporting.
+          flutterVersion: '[user-branch]/',
+          shutdownHooks: ShutdownHooks(),
+        );
+
+        expect(testUsage.printedWelcome, false);
+      },
+      overrides: <Type, Generator>{
+        FileSystem: () => MemoryFileSystem.test(),
+        ProcessManager: () => FakeProcessManager.any(),
+        BotDetector: () => const FakeBotDetector(true),
+        Usage: () => testUsage,
+      },
+    );
   });
 
   group('unified_analytics', () {