Normalize versicle notation to plain V./R. across propers

Unicode ℣/℟ (U+2123/U+211F) were mixed unpredictably with plain V./R.
across ~550 proper YAML files, sometimes within the same file. Screen
readers can't announce the unicode glyphs. Replace all instances with
plain text.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01QC6jHsj75xcsTkapqJR6fD

src/data/propers/common/vespers-responsory-annunciation.yml

@@ -9,18 +9,18 @@ id: vespers-responsory-annunciation
 text:
   la: |
     R.br. Ángelus Dómini * Nuntiávit Maríæ.
-    ℟. Ángelus Dómini * Nuntiávit Maríæ.
-    ℣. Et concépit de Spíritu Sancto.
-    ℟. Nuntiávit Maríæ.
-    ℣. Glória Patri, et Fílio, * et Spirítui Sancto.
-    ℟. Ángelus Dómini * Nuntiávit Maríæ.
+    R. Ángelus Dómini * Nuntiávit Maríæ.
+    V. Et concépit de Spíritu Sancto.
+    R. Nuntiávit Maríæ.
+    V. Glória Patri, et Fílio, * et Spirítui Sancto.
+    R. Ángelus Dómini * Nuntiávit Maríæ.
   en: |
     R.br. The Angel of the Lord * declared unto Mary.
-    ℟. The Angel of the Lord * declared unto Mary.
-    ℣. And she conceived of the Holy Ghost.
-    ℟. Declared unto Mary.
-    ℣. Glory be to the Father, and to the Son, * and to the Holy Ghost.
-    ℟. The Angel of the Lord * declared unto Mary.
+    R. The Angel of the Lord * declared unto Mary.
+    V. And she conceived of the Holy Ghost.
+    R. Declared unto Mary.
+    V. Glory be to the Father, and to the Son, * and to the Holy Ghost.
+    R. The Angel of the Lord * declared unto Mary.
 status:
   la: verified
   en: draft