chore: add info to enable network permissions on android

src/fragments/lib/project-setup/flutter/platform-setup/android.mdx

@@ -66,3 +66,16 @@ android {
 <Callout info>
 If you would like to use a higher version of Gradle or Android Gradle plugin see the compatibility matrix [here](https://developer.android.com/build/releases/gradle-plugin#updating-gradle).
 </Callout>
+
+### Network Permissions for Release Builds
+
+Flutter apps have access to make network requests by default in debug mode. This permission needs to be added when building in release mode. To do this, open `android/app/src/main/AndroidManifest.xml` and make the following addition.
+
+```xml title="android/app/src/main/AndroidManifest.xml"
+<manifest xmlns:android="http://schemas.android.com/apk/res/android">
+// highlight-start
+   <uses-permission android:name="android.permission.INTERNET"/>
+// highlight-end
+...
+</manifest>
+```

src/pages/[platform]/start/platform-setup/index.mdx

@@ -111,18 +111,31 @@ android {
 If you would like to use a higher version of Gradle or Android Gradle plugin see the compatibility matrix [here](https://developer.android.com/build/releases/gradle-plugin#updating-gradle).
 </Callout>
 
-## Web
+#### Network Permissions for Release Builds
+
+Flutter apps have access to make network requests by default in debug mode. This permission needs to be added when building in release mode. To do this, open `android/app/src/main/AndroidManifest.xml` and make the following addition.
+
+```xml title="android/app/src/main/AndroidManifest.xml"
+<manifest xmlns:android="http://schemas.android.com/apk/res/android">
+// highlight-start
+   <uses-permission android:name="android.permission.INTERNET"/>
+// highlight-end
+...
+</manifest>
+```
+
+### Web
 
 There are no Amplify specific requirements or setup instructions when targeting web. You will need to use a browser supported by Flutter. See the following Flutter docs for more info:
 
 - [Supported deployment platforms](https://docs.flutter.dev/reference/supported-platforms)
 - [FAQ: Which web browsers are supported by Flutter?](https://docs.flutter.dev/development/platform-integration/web/faq#which-web-browsers-are-supported-by-flutter)
 
-## macOS
+### macOS
 
 Amplify requires a minimum deployment target of 10.15 and Xcode 13.2 or higher when targeting macOS. Additionally, you will need to enable networking, keychain entitlements, and code signing.
 
-### Update Minimum Version
+#### Update Minimum Version
 
 From your project root, navigate to the `macos/` directory and open the `Podfile` in a text editor of your choice. Update the target macOS platform to 10.15 or higher.
 
@@ -138,15 +151,15 @@ Select Runner, Project -> Runner and then the "Info" tab. Update "macOS Deployme
 
 ![Setting the macOS version to 10.15 or higher in the macOS Deployment Target tab of the Runner info section.](/images/project-setup/flutter/mac/project-min-deployment-version.png)
 
-### Enable Network Calls
+#### Enable Network Calls
 
 Open your project in Xcode and select Runner, Targets -> Runner and then the "Signing and Capabilities" tab. Under "App Sandbox" select "Outgoing Connections (Client)".
 
 ![Selecting outgoing connections in the app sandbox section of the runner signing and capabilities tab.](/images/project-setup/flutter/mac/xcode-entitlements.png)
 
 For more info on the Networking entitlement, see Apple's documentation on [com.apple.security.network.client](https://developer.apple.com/documentation/bundleresources/entitlements/com_apple_security_network_client).
 
-### Enable Keychain Sharing
+#### Enable Keychain Sharing
 
 <Callout info>
 
@@ -175,17 +188,17 @@ Open your project in Xcode and select Runner, Targets -> Runner and then the "Si
 ![Team selector and Enable Development Signing button highlighted in the signing and capabilities section of the runner tab.](/images/project-setup/flutter/mac/enable-signing.png)
 
 
-## Windows
+### Windows
 
 There are no Amplify specific requirements or setup instructions when targeting Windows. You will need to use a Windows version supported by Flutter. See the following Flutter docs for more info:
 
 - [Supported deployment platforms](https://docs.flutter.dev/reference/supported-platforms)
 
-## Linux
+### Linux
 
 Amplify Flutter depends on the [libsecret](https://wiki.gnome.org/Projects/Libsecret) library when targeting Linux.
 
-### Local Development
+#### Local Development
 
 To run and debug an app that depends on Amplify Flutter, you must install `libsecret-1-dev`. Run the following commands to install `libsecret-1-dev`. this will also install dependencies of `libsecret-1-dev`, such as `libglib2.0-dev`.
 
@@ -202,7 +215,7 @@ sudo apt-get install -y libsecret-1-dev
 
 {/* cSpell:enable */}
 
-### Packaging Your App
+#### Packaging Your App
 
 To include the required dependencies when packaging your app with Snapcraft, include them in your `snapcraft.yaml` file. For more info, see [Flutter's documentation on releasing to the Snap Store](https://docs.flutter.dev/deployment/linux).