fix: highlight the correct place when multibyte characters are involved (#2965)

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Author: lilydjwg

crates/atuin/src/command/client/search/history_list.rs

@@ -273,8 +273,9 @@ impl DrawState<'_> {
                     }
                     style.attributes.set(style::Attribute::Bold);
                 }
-                self.draw(&ch.to_string(), style.into());
-                pos += 1;
+                let s = ch.to_string();
+                self.draw(&s, style.into());
+                pos += s.len();
             }
             pos += 1;
         }