Fixed code sign error message width (#19026)

* Fixed codesign error message width

* Fixed mac_test

* Removed snackbar code

packages/flutter_tools/lib/src/ios/code_signing.dart

@@ -17,63 +17,67 @@ import '../globals.dart';
 ///
 /// The user likely never did any iOS development.
 const String noCertificatesInstruction = '''
-═══════════════════════════════════════════════════════════════════════════════════
+════════════════════════════════════════════════════════════════════════════════
 No valid code signing certificates were found
-You can connect to your Apple Developer account by signing in with your Apple ID in Xcode
-and create an iOS Development Certificate as well as a Provisioning Profile for your project by:
+You can connect to your Apple Developer account by signing in with your Apple ID
+in Xcode and create an iOS Development Certificate as well as a Provisioning 
+Profile for your project by:
 $fixWithDevelopmentTeamInstruction
   5- Trust your newly created Development Certificate on your iOS device
      via Settings > General > Device Management > [your new certificate] > Trust
 
 For more information, please visit:
-  https://developer.apple.com/library/content/documentation/IDEs/Conceptual/AppDistributionGuide/MaintainingCertificates/MaintainingCertificates.html
+  https://developer.apple.com/library/content/documentation/IDEs/Conceptual/
+  AppDistributionGuide/MaintainingCertificates/MaintainingCertificates.html
 
 Or run on an iOS simulator without code signing
-═══════════════════════════════════════════════════════════════════════════════════''';
+════════════════════════════════════════════════════════════════════════════════''';
 /// User message when there are no provisioning profile for the current app bundle identifier.
 ///
 /// The user did iOS development but never on this project and/or device.
 const String noProvisioningProfileInstruction = '''
-═══════════════════════════════════════════════════════════════════════════════════
-No Provisioning Profile was found for your project's Bundle Identifier or your device.
-You can create a new Provisioning Profile for your project in Xcode for your
-team by:
+════════════════════════════════════════════════════════════════════════════════
+No Provisioning Profile was found for your project's Bundle Identifier or your 
+device. You can create a new Provisioning Profile for your project in Xcode for 
+your team by:
 $fixWithDevelopmentTeamInstruction
 
-It's also possible that a previously installed app with the same Bundle Identifier was
-signed with a different certificate.
+It's also possible that a previously installed app with the same Bundle 
+Identifier was signed with a different certificate.
 
 For more information, please visit:
   https://flutter.io/setup/#deploy-to-ios-devices
 
 Or run on an iOS simulator without code signing
-═══════════════════════════════════════════════════════════════════════════════════''';
+════════════════════════════════════════════════════════════════════════════════''';
 /// Fallback error message for signing issues.
 ///
 /// Couldn't auto sign the app but can likely solved by retracing the signing flow in Xcode.
 const String noDevelopmentTeamInstruction = '''
-═══════════════════════════════════════════════════════════════════════════════════
-Building a deployable iOS app requires a selected Development Team with a Provisioning Profile
-Please ensure that a Development Team is selected by:
+════════════════════════════════════════════════════════════════════════════════
+Building a deployable iOS app requires a selected Development Team with a 
+Provisioning Profile. Please ensure that a Development Team is selected by:
 $fixWithDevelopmentTeamInstruction
 
 For more information, please visit:
   https://flutter.io/setup/#deploy-to-ios-devices
 
 Or run on an iOS simulator without code signing
-═══════════════════════════════════════════════════════════════════════════════════''';
+════════════════════════════════════════════════════════════════════════════════''';
 const String fixWithDevelopmentTeamInstruction = '''
   1- Open the Flutter project's Xcode target with
        open ios/Runner.xcworkspace
   2- Select the 'Runner' project in the navigator then the 'Runner' target
      in the project settings
-  3- In the 'General' tab, make sure a 'Development Team' is selected. You may need to
+  3- In the 'General' tab, make sure a 'Development Team' is selected. 
+     You may need to:
          - Log in with your Apple ID in Xcode first
          - Ensure you have a valid unique Bundle ID
          - Register your device with your Apple Developer Account
          - Let Xcode automatically provision a profile for your app
   4- Build or run your project again''';
 
+
 final RegExp _securityFindIdentityDeveloperIdentityExtractionPattern =
     new RegExp(r'^\s*\d+\).+"(.+Developer.+)"$');
 final RegExp _securityFindIdentityCertificateCnExtractionPattern = new RegExp(r'.*\(([a-zA-Z0-9]+)\)');

packages/flutter_tools/test/ios/mac_test.dart

@@ -270,7 +270,7 @@ Error launching application on iPhone.''',
       await diagnoseXcodeBuildFailure(buildResult);
       expect(
         testLogger.errorText,
-        contains('No Provisioning Profile was found for your project\'s Bundle Identifier or your device.'),
+        contains('No Provisioning Profile was found for your project\'s Bundle Identifier or your \ndevice.'),
       );
     });
 
@@ -351,7 +351,7 @@ Could not build the precompiled application for the device.''',
       await diagnoseXcodeBuildFailure(buildResult);
       expect(
         testLogger.errorText,
-        contains('Building a deployable iOS app requires a selected Development Team with a Provisioning Profile'),
+        contains('Building a deployable iOS app requires a selected Development Team with a \nProvisioning Profile.'),
       );
     });
   });