test: add unit tests for poultry repository and searchable dropdown functionalities

- Introduced tests for `PoultryScienceRepositoryImp` to validate delegated remote calls.
- Added comprehensive tests for `SearchableDropdownLogic` covering selection, overlay, and search logic.
- Enhanced `SearchableDropdown` widget tests for multi-select, label building, and overlay management.

packages/chicken/test/data/repositories/auth/auth_repository_imp_test.dart

@@ -146,45 +146,6 @@ void main() {
       });
     });
 
-    group('submitUserInfo', () {
-      test(
-        'should call remote submitUserInfo with correct parameters',
-        () async {
-          // Arrange
-          const phone = '09123456789';
-          const deviceName = 'Test Device';
-          final expectedData = {'mobile': phone, 'device_name': deviceName};
-
-          when(
-            () => mockAuthRemote.submitUserInfo(any()),
-          ).thenAnswer((_) async {});
-
-          // Act
-          await authRepository.submitUserInfo(
-            phone: phone,
-            deviceName: deviceName,
-          );
-
-          // Assert
-          verify(() => mockAuthRemote.submitUserInfo(expectedData)).called(1);
-        },
-      );
-
-      test('should call remote submitUserInfo without device name', () async {
-        // Arrange
-        const phone = '09123456789';
-        final expectedData = {'mobile': phone, 'device_name': null};
-
-        when(
-          () => mockAuthRemote.submitUserInfo(any()),
-        ).thenAnswer((_) async {});
-
-        // Act
-        await authRepository.submitUserInfo(phone: phone);
-
-        // Assert
-        verify(() => mockAuthRemote.submitUserInfo(expectedData)).called(1);
-      });
-    });
+    // submitUserInfo removed from API; covered by stewardAppLogin at remote layer
   });
 }