Fix open page per click in RTL mode

The action to perform which gets determined on a tap zone click is always in the correct direction, thus, the direction for the "openPage" call has to be forced to be "LTR" to prevent inverting the direction

src/modules/reader/services/ReaderControls.ts

@@ -407,7 +407,7 @@ export class ReaderControls {
                                 openChapter,
                             );
                         } else {
-                            openPage('previous');
+                            openPage('previous', 'ltr');
                         }
                         break;
                     case TapZoneRegionType.NEXT:
@@ -422,7 +422,7 @@ export class ReaderControls {
                                 openChapter,
                             );
                         } else {
-                            openPage('next');
+                            openPage('next', 'ltr');
                         }
                         break;
                     default: