Revert Changes to Libraries/Utilities to fix prerelease type (#36655)

Co-authored-by: Riccardo Cipolleschi <cipolleschi@fb.com>

packages/react-native/Libraries/Utilities/NativePlatformConstantsAndroid.js

@@ -19,7 +19,7 @@ export interface Spec extends TurboModule {
       major: number,
       minor: number,
       patch: number,
-      prerelease: ?string,
+      prerelease: ?number,
     |},
     Version: number,
     Release: string,

packages/react-native/Libraries/Utilities/NativePlatformConstantsIOS.js

@@ -19,7 +19,7 @@ export interface Spec extends TurboModule {
       major: number,
       minor: number,
       patch: number,
-      prerelease: ?string,
+      prerelease: ?number,
     |},
     forceTouchAvailable: boolean,
     osVersion: string,

packages/react-native/Libraries/Utilities/Platform.android.js

@@ -32,7 +32,7 @@ const Platform = {
       major: number,
       minor: number,
       patch: number,
-      prerelease: ?string,
+      prerelease: ?number,
     |},
     Version: number,
     Release: string,

packages/react-native/Libraries/Utilities/Platform.d.ts

@@ -23,7 +23,7 @@ type PlatformConstants = {
     major: number;
     minor: number;
     patch: number;
-    prerelease?: string | null | undefined;
+    prerelease?: number | null | undefined;
   };
 };
 interface PlatformStatic {

packages/react-native/Libraries/Utilities/Platform.ios.js

@@ -35,7 +35,7 @@ const Platform = {
       major: number,
       minor: number,
       patch: number,
-      prerelease: ?string,
+      prerelease: ?number,
     |},
     systemName: string,
   |} {