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/st-apollonia-commemoration.yml

@@ -13,7 +13,7 @@ text:
     Orémus.
     Deus, qui inter cétera poténtiæ tuæ mirácula étiam in sexu frágili victóriam martýrii contulísti: concéde propítius; ut, qui beátæ Apollóniæ Vírginis et Mártyris tuæ natalícia cólimus, per ejus ad te exémpla gradiámur.
     Per Dóminum nostrum Jesum Christum, Fílium tuum: qui tecum vivit et regnat in unitáte Spíritus Sancti, Deus, per ómnia sǽcula sæculórum.
-    ℟. Amen.
+    R. Amen.
   en: |
     Ant. The kingdom of heaven is like unto a merchantman * seeking goodly pearls, who, when he had found one pearl of great price, went and sold all that he had, and bought it.
     V. Grace is poured into thy lips.
@@ -21,7 +21,7 @@ text:
     Let us pray.
     O God, Who among the other miracles of thy power have bestowed the victory of martyrdom even upon the weaker sex, graciously grant that we who commemorate the anniversary of the death of blessed Apollonia, thy Virgin and Martyr, may come to thee by the path of her example.
     Through Jesus Christ, thy Son our Lord, Who liveth and reigneth with thee, in the unity of the Holy Ghost, God, world without end.
-    ℟. Amen.
+    R. Amen.
 status:
   la: verified
   en: verified