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/lauds-responsory-st-mark.yml

@@ -4,18 +4,18 @@ id: lauds-responsory-st-mark
 text:
   la: |
     R.br. Sancti et justi in Dómino gaudéte, * Allelúja, allelúja.
-    ℟. Sancti et justi in Dómino gaudéte, * Allelúja, allelúja.
-    ℣. Vos elégit Deus in hereditátem sibi.
-    ℟. Allelúja, allelúja.
-    ℣. Glória Patri, et Fílio, * et Spirítui Sancto.
-    ℟. Sancti et justi in Dómino gaudéte, * Allelúja, allelúja.
+    R. Sancti et justi in Dómino gaudéte, * Allelúja, allelúja.
+    V. Vos elégit Deus in hereditátem sibi.
+    R. Allelúja, allelúja.
+    V. Glória Patri, et Fílio, * et Spirítui Sancto.
+    R. Sancti et justi in Dómino gaudéte, * Allelúja, allelúja.
   en: |
     R.br. Saints and just, rejoice in the Lord, * Alleluia, alleluia.
-    ℟. Saints and just, rejoice in the Lord, * Alleluia, alleluia.
-    ℣. The Lord has chosen you for his inheritance.
-    ℟. Alleluia, alleluia.
-    ℣. Glory be to the Father, and to the Son, * and to the Holy Ghost.
-    ℟. Saints and just, rejoice in the Lord, * Alleluia, alleluia.
+    R. Saints and just, rejoice in the Lord, * Alleluia, alleluia.
+    V. The Lord has chosen you for his inheritance.
+    R. Alleluia, alleluia.
+    V. Glory be to the Father, and to the Son, * and to the Holy Ghost.
+    R. Saints and just, rejoice in the Lord, * Alleluia, alleluia.
 status:
   la: verified
   en: verified