Avoid redundant state updates in Pressable if children and style are not functions (#44615)

Summary:
Goal of this PR is to optimise `Pressable` component, similarly to https://github.com/react-native-tvos/react-native-tvos/pull/724 . `Pressable` `style` and `children` properties can, but doesn't have to be functions. Usually we passing objects or arrays. `pressed` state is used only when `style` or `children` are `functions`, so let's update that state only in such case, otherwise let's skip state updates to improve the performance.

 That way we won't have to rerender the component when it is being pressed (assuming that `style` and `children` are not going to be functions)

## Changelog:

[GENERAL] [CHANGED] - Improve performance of `Pressable` component.

Pull Request resolved: https://github.com/facebook/react-native/pull/44615

Test Plan: Verify that `Pressable` updates its `pressed` state when `style` or `children` are functions.

Reviewed By: javache

Differential Revision: D57614309

Pulled By: fabriziocucci

fbshipit-source-id: 473e0ab3c4bf7b3ef04ba19f76105ac65371a3fb

packages/react-native/Libraries/Components/Pressable/Pressable.js

@@ -245,6 +245,9 @@ function Pressable(
 
   const [pressed, setPressed] = usePressState(testOnly_pressed === true);
 
+  const shouldUpdatePressed =
+    typeof children === 'function' || typeof style === 'function';
+
   let _accessibilityState = {
     busy: ariaBusy ?? accessibilityState?.busy,
     checked: ariaChecked ?? accessibilityState?.checked,
@@ -300,7 +303,7 @@ function Pressable(
         if (android_rippleConfig != null) {
           android_rippleConfig.onPressIn(event);
         }
-        setPressed(true);
+        shouldUpdatePressed && setPressed(true);
         if (onPressIn != null) {
           onPressIn(event);
         }
@@ -310,7 +313,7 @@ function Pressable(
         if (android_rippleConfig != null) {
           android_rippleConfig.onPressOut(event);
         }
-        setPressed(false);
+        shouldUpdatePressed && setPressed(false);
         if (onPressOut != null) {
           onPressOut(event);
         }
@@ -333,6 +336,7 @@ function Pressable(
       onPressOut,
       pressRetentionOffset,
       setPressed,
+      shouldUpdatePressed,
       unstable_pressDelay,
     ],
   );