chore(📚): Add instructions about React Native 0.78 and React 19

Author: wcandillon

apps/docs/docs/getting-started/installation.md

@@ -14,6 +14,8 @@ In addition you should make sure you're on at least `iOS 13` and `Android API le
 To use React Native Skia with the new architecture, `react-native@>=0.72` is required. <br />
 To use React Native Skia with video support, `Android API level 26` or above is required.
 
+For `react-native@>=0.78` and `react@>=19`, you need to use `@shopify/react-native-skia@next`.
+
 `tvOS >= 13` is also supported.
 
 Skia has a new experimental backend named Graphite which runs on Vulkan and Metal.