Fix small code smell (#7058)

* RolesAndPermissionsNode does not need to implement RolesAndPermissionsNavigator and simplify the code.

* Remove default implementation in `RoomMemberListNavigator`

* Remove dead code.

* Fix test compilation issue

features/rolesandpermissions/impl/src/main/kotlin/io/element/android/features/rolesandpermissions/impl/root/RolesAndPermissionsNode.kt

@@ -26,12 +26,8 @@ class RolesAndPermissionsNode(
     @Assisted buildContext: BuildContext,
     @Assisted plugins: List<Plugin>,
     private val presenter: RolesAndPermissionsPresenter,
-) : Node(buildContext, plugins = plugins), RolesAndPermissionsNavigator {
+) : Node(buildContext, plugins = plugins) {
     interface Callback : Plugin, RolesAndPermissionsNavigator {
-        override fun openAdminList()
-        override fun openModeratorList()
-        override fun openEditPermissions()
-
         override fun onBackClick() {}
     }
 
@@ -56,8 +52,8 @@ class RolesAndPermissionsNode(
 }
 
 interface RolesAndPermissionsNavigator {
-    fun onBackClick() {}
-    fun openAdminList() {}
-    fun openModeratorList() {}
-    fun openEditPermissions() {}
+    fun onBackClick()
+    fun openAdminList()
+    fun openModeratorList()
+    fun openEditPermissions()
 }

features/rolesandpermissions/impl/src/main/kotlin/io/element/android/features/rolesandpermissions/impl/root/RolesAndPermissionsView.kt

@@ -191,7 +191,12 @@ internal fun RolesAndPermissionsViewPreview(@PreviewParameter(RolesAndPermission
     ElementPreview {
         RolesAndPermissionsView(
             state = state,
-            rolesAndPermissionsNavigator = object : RolesAndPermissionsNavigator {},
+            rolesAndPermissionsNavigator = object : RolesAndPermissionsNavigator {
+                override fun onBackClick() {}
+                override fun openAdminList() {}
+                override fun openModeratorList() {}
+                override fun openEditPermissions() {}
+            },
         )
     }
 }