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-versicle-transfiguration.yml

@@ -4,11 +4,11 @@
 id: lauds-versicle-transfiguration
 text:
   la: |
-    ℣. Coróna áurea super caput ejus.
-    ℟. Expréssa signo sanctitátis, glóriæ, et honóris.
+    V. Coróna áurea super caput ejus.
+    R. Expréssa signo sanctitátis, glóriæ, et honóris.
   en: |
-    ℣. A crown of gold upon his head.
-    ℟. Wherein was engraved holiness, glory, and honour.
+    V. A crown of gold upon his head.
+    R. Wherein was engraved holiness, glory, and honour.
 status:
   la: verified
   en: verified