Support minimumFontScale in paragraphAttributes (#50933)

Summary:
Support minimumFontScale in paragraphAttributes

Resolves https://github.com/facebook/react-native/issues/50934

## Changelog:

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Support minimumFontScale in paragraphAttributes

Pull Request resolved: https://github.com/facebook/react-native/pull/50933

Test Plan:
Tested via this code here: https://github.com/microsoft/react-native-windows/pull/14617

Before:
![image](https://github.com/user-attachments/assets/76b94aa8-228b-4a7e-9ec0-c366c7bf38ac)

After:
![image](https://github.com/user-attachments/assets/f9fbf8c2-9776-429f-8605-5663f9c7b7c9)

https://github.com/user-attachments/assets/fb9ae889-7d01-4317-a6e6-61e6b0708bc4

Reviewed By: NickGerleman

Differential Revision: D73658489

Pulled By: cipolleschi

fbshipit-source-id: 87ed27c0de2363e2ce0d908cc26670349586e7a6

packages/react-native/ReactCommon/react/renderer/attributedstring/ParagraphAttributes.cpp

@@ -30,7 +30,8 @@ bool ParagraphAttributes::operator==(const ParagraphAttributes& rhs) const {
              rhs.includeFontPadding,
              rhs.android_hyphenationFrequency) &&
       floatEquality(minimumFontSize, rhs.minimumFontSize) &&
-      floatEquality(maximumFontSize, rhs.maximumFontSize);
+      floatEquality(maximumFontSize, rhs.maximumFontSize) &&
+      floatEquality(minimumFontScale, rhs.minimumFontScale);
 }
 
 bool ParagraphAttributes::operator!=(const ParagraphAttributes& rhs) const {

packages/react-native/ReactCommon/react/renderer/attributedstring/ParagraphAttributes.h

@@ -70,6 +70,12 @@ class ParagraphAttributes : public DebugStringConvertible {
   Float minimumFontSize{std::numeric_limits<Float>::quiet_NaN()};
   Float maximumFontSize{std::numeric_limits<Float>::quiet_NaN()};
 
+  /*
+   * Specifies the smallest possible scale a font can reach when
+   * adjustsFontSizeToFit is enabled. (values 0.01-1.0).
+   */
+  Float minimumFontScale{std::numeric_limits<Float>::quiet_NaN()};
+
   bool operator==(const ParagraphAttributes&) const;
   bool operator!=(const ParagraphAttributes&) const;
 
@@ -96,7 +102,8 @@ struct hash<facebook::react::ParagraphAttributes> {
         attributes.minimumFontSize,
         attributes.maximumFontSize,
         attributes.includeFontPadding,
-        attributes.android_hyphenationFrequency);
+        attributes.android_hyphenationFrequency,
+        attributes.minimumFontScale);
   }
 };
 } // namespace std

packages/react-native/ReactCommon/react/renderer/attributedstring/conversions.h

@@ -948,6 +948,12 @@ inline ParagraphAttributes convertRawProp(
       "adjustsFontSizeToFit",
       sourceParagraphAttributes.adjustsFontSizeToFit,
       defaultParagraphAttributes.adjustsFontSizeToFit);
+  paragraphAttributes.minimumFontScale = convertRawProp(
+      context,
+      rawProps,
+      "minimumFontScale",
+      sourceParagraphAttributes.minimumFontScale,
+      defaultParagraphAttributes.minimumFontScale);
   paragraphAttributes.minimumFontSize = convertRawProp(
       context,
       rawProps,

packages/react-native/ReactCommon/react/renderer/components/text/ParagraphProps.cpp

@@ -96,6 +96,12 @@ void ParagraphProps::setProp(
         paragraphAttributes,
         adjustsFontSizeToFit,
         "adjustsFontSizeToFit");
+    REBUILD_FIELD_SWITCH_CASE(
+        paDefaults,
+        value,
+        paragraphAttributes,
+        minimumFontScale,
+        "minimumFontScale");
     REBUILD_FIELD_SWITCH_CASE(
         paDefaults,
         value,