Remove unnecessary horizontal scroll in RTL UI (#3263)

Author: RaymondLuong3

src/SIL.XForge.Scripture/ClientApp/src/styles.scss

@@ -25,6 +25,11 @@ html {
 body {
   margin: 0;
   font-family: Roboto, sans-serif;
+
+  // prevents a horizontal scroll bar in RTL mode
+  .cdk-visually-hidden {
+    inset-inline-start: 0;
+  }
 }
 
 as-split.is-disabled > .as-split-gutter .as-split-gutter-icon {