Fix misplaced '@' in RTL post meta. (#4531)

Co-authored-by: Joel <joel.garplind+github@gmail.com>
Co-authored-by: Hailey <me@haileyok.com>

src/lib/strings/bidi.ts

@@ -0,0 +1,10 @@
+const LEFT_TO_RIGHT_EMBEDDING = '\u202A'
+const POP_DIRECTIONAL_FORMATTING = '\u202C'
+
+/*
+ * Force LTR directionality in a string.
+ * https://www.unicode.org/reports/tr9/#Directional_Formatting_Characters
+ */
+export function forceLTR(str: string) {
+  return LEFT_TO_RIGHT_EMBEDDING + str + POP_DIRECTIONAL_FORMATTING
+}