fix: always allow navigation to voicemail screen regardless of feature support

Previously the settings tile was disabled with reduced opacity when voicemail
was not configured, which was confusing. Now the tile is always tappable and
the voicemail screen shows a placeholder explaining the reason.

Author: SERDUN

lib/features/settings/view/settings_screen.dart

@@ -136,27 +136,16 @@ class SettingsScreen extends StatelessWidget {
                               onTap: () => _onItemTap(context, item),
                             ),
                         ] else if (item.flavor == SettingsFlavor.voicemail) ...[
-                          BlocBuilder<VoicemailCubit, VoicemailState>(
-                            builder: (context, voicemailState) {
-                              return SettingsTile(
-                                title: context.parseL10n(item.titleL10n),
-                                icon: item.icon,
-                                iconColor: item.iconColor ?? effectiveStyle?.leadingIconsColor,
-                                trailing: !voicemailState.isFeatureNotSupported ? UnreadBadge(count: state.unreadVoicemailCount) : null,
-                                textStyle: effectiveStyle?.itemTextStyle,
-                                showSeparator: showSeparators,
-                                onTap: () => !voicemailState.isFeatureNotSupported ? _onItemTap(context, item) : {
-                                  ScaffoldMessenger.of(
-                                    context,
-                                  ).showSnackBar(SnackBar(content: Text(context.l10n.voicemail_Snackbar_notConfigured)))
-                                },
-                                enabled: !voicemailState.isFeatureNotSupported,
-                                opacity: voicemailState.isFeatureNotSupported ? 0.4 : 1.0,
-                              );
-                            },
+                          SettingsTile(
+                            title: context.parseL10n(item.titleL10n),
+                            icon: item.icon,
+                            iconColor: item.iconColor ?? effectiveStyle?.leadingIconsColor,
+                            trailing: UnreadBadge(count: state.unreadVoicemailCount),
+                            textStyle: effectiveStyle?.itemTextStyle,
+                            showSeparator: showSeparators,
+                            onTap: () => _onItemTap(context, item),
                           ),
-                        ]
-                        else
+                        ] else
                           SettingsTile(
                             title: context.parseL10n(item.titleL10n),
                             icon: item.icon,