[flutter_tool] Disable analytics on more bots (#50669)

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

@@ -66,6 +66,11 @@ class BotDetector {
       || _platform.environment['CHROME_HEADLESS'] == '1'
       || _platform.environment.containsKey('BUILDBOT_BUILDERNAME')
       || _platform.environment.containsKey('SWARMING_TASK_ID')
+
+      // Property when running on borg.
+      || _platform.environment.containsKey('BORG_ALLOC_DIR')
+
+      // Property when running on Azure.
       || await _azureDetector.isRunningOnAzure;
   }
 }

packages/flutter_tools/test/general.shard/base/bot_detector_test.dart

@@ -67,6 +67,11 @@ void main() {
         when(mockHttpClientRequest.headers).thenReturn(mockHttpHeaders);
         expect(await botDetector.isRunningOnBot, isTrue);
       });
+
+      testWithoutContext('returns true when running on borg', () async {
+        fakePlatform.environment['BORG_ALLOC_DIR'] = 'true';
+        expect(await botDetector.isRunningOnBot, isTrue);
+      });
     });
   });