Adds isPressable native prop to TextAttributes (#40871)

Summary:
Pull Request resolved: #40871

If we pass isPressable to the native props object (via TextAttributes), we can use this information to bypass hit testing on some spans. This is rather important on some platforms where pointerenter/pointerleave/ mousemove events force frequent hit testing.

## Changelog:

[General] [Internal]

Reviewed By: javache

Differential Revision: D50228473

fbshipit-source-id: 4fce85f4b18617fbe10d3c804e943484bf990664

Author: rozele

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

@@ -95,6 +95,12 @@ void TextAttributes::apply(TextAttributes textAttributes) {
   isHighlighted = textAttributes.isHighlighted.has_value()
       ? textAttributes.isHighlighted
       : isHighlighted;
+  // TextAttributes "inherits" the isPressable value from ancestors, so this
+  // only applies the current node's value for isPressable if it is truthy.
+  isPressable =
+      textAttributes.isPressable.has_value() && *textAttributes.isPressable
+      ? textAttributes.isPressable
+      : isPressable;
   layoutDirection = textAttributes.layoutDirection.has_value()
       ? textAttributes.layoutDirection
       : layoutDirection;
@@ -125,6 +131,7 @@ bool TextAttributes::operator==(const TextAttributes& rhs) const {
              textShadowOffset,
              textShadowColor,
              isHighlighted,
+             isPressable,
              layoutDirection,
              accessibilityRole,
              role,
@@ -147,6 +154,7 @@ bool TextAttributes::operator==(const TextAttributes& rhs) const {
              rhs.textShadowOffset,
              rhs.textShadowColor,
              rhs.isHighlighted,
+             rhs.isPressable,
              rhs.layoutDirection,
              rhs.accessibilityRole,
              rhs.role,
@@ -216,6 +224,7 @@ SharedDebugStringConvertibleList TextAttributes::getDebugProps() const {
 
       // Special
       debugStringConvertibleItem("isHighlighted", isHighlighted),
+      debugStringConvertibleItem("isPressable", isPressable),
       debugStringConvertibleItem("layoutDirection", layoutDirection),
       debugStringConvertibleItem("accessibilityRole", accessibilityRole),
       debugStringConvertibleItem("role", role),

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

@@ -74,6 +74,7 @@ class TextAttributes : public DebugStringConvertible {
 
   // Special
   std::optional<bool> isHighlighted{};
+  std::optional<bool> isPressable{};
 
   // TODO T59221129: document where this value comes from and how it is set.
   // It's not clear if this is being used properly, or if it's being set at all.
@@ -132,6 +133,7 @@ struct hash<facebook::react::TextAttributes> {
         textAttributes.textShadowRadius,
         textAttributes.textShadowColor,
         textAttributes.isHighlighted,
+        textAttributes.isPressable,
         textAttributes.layoutDirection,
         textAttributes.accessibilityRole,
         textAttributes.role);