refactor(authentication): remove demo email suggestion comment

- Commented out the entire demo email suggestion section in the request code page
- Added a comment explaining that any email is accepted in demo mode

Author: fulleni

lib/authentication/view/request_code_page.dart

@@ -132,30 +132,33 @@ class _RequestCodeView extends StatelessWidget {
                         ),
                         textAlign: TextAlign.center,
                       ),
-                      // Display demo email suggestion if in demo environment
-                      BlocSelector<AppBloc, AppState, AppEnvironment?>(
-                        selector: (state) => state.environment,
-                        builder: (context, environment) {
-                          if (environment == AppEnvironment.demo) {
-                            return Column(
-                              children: [
-                                const SizedBox(height: AppSpacing.md),
-                                Text(
-                                  l10n.demoEmailSuggestionMessage(
-                                    'admin@mail.com',
-                                  ),
-                                  style: textTheme.bodyMedium?.copyWith(
-                                    color: colorScheme.secondary,
-                                    fontWeight: FontWeight.bold,
-                                  ),
-                                  textAlign: TextAlign.center,
-                                ),
-                              ],
-                            );
-                          }
-                          return const SizedBox.shrink();
-                        },
-                      ),
+
+                      // NOT NEEDED; any email is accepted in demo mode
+                      //
+                      //Display demo email suggestion if in demo environment
+                      // BlocSelector<AppBloc, AppState, AppEnvironment?>(
+                      //   selector: (state) => state.environment,
+                      //   builder: (context, environment) {
+                      //     if (environment == AppEnvironment.demo) {
+                      //       return Column(
+                      //         children: [
+                      //           const SizedBox(height: AppSpacing.md),
+                      //           Text(
+                      //             l10n.demoEmailSuggestionMessage(
+                      //               'admin@mail.com',
+                      //             ),
+                      //             style: textTheme.bodyMedium?.copyWith(
+                      //               color: colorScheme.secondary,
+                      //               fontWeight: FontWeight.bold,
+                      //             ),
+                      //             textAlign: TextAlign.center,
+                      //           ),
+                      //         ],
+                      //       );
+                      //     }
+                      //     return const SizedBox.shrink();
+                      //   },
+                      // ),
                       const SizedBox(height: AppSpacing.xxl),
                       _EmailLinkForm(isLoading: isLoading),
                     ],