Added Flutter and Capacitor Code snippets for preferred locale override

Author: mawr92

code_blocks/tools/paywalls_preferred_locale_4.dart

@@ -0,0 +1,9 @@
+// In configure
+await Purchases.configure(
+  PurchasesConfiguration('<YOUR_API_KEY>')
+    // other configuration options...
+    ..preferredUILocaleOverride = 'es-ES',
+);
+
+// Or during runtime
+await Purchases.overridePreferredUILocale('de-DE');

code_blocks/tools/paywalls_preferred_locale_5.ts.txt

@@ -0,0 +1,9 @@
+// In configure
+await Purchases.configure({
+  apiKey: '<YOUR_API_KEY>',
+  // other configuration options...
+  preferredUILocaleOverride: 'es-ES',
+});
+
+// Or during runtime
+await Purchases.overridePreferredUILocale({ locale: 'de-DE' });

docs/tools/paywalls/displaying-paywalls.mdx

@@ -337,6 +337,8 @@ You can set a preferred locale for your paywalls to display in a specific langua
 import preferredLocaleSwift from '@site/code_blocks/tools/paywalls_preferred_locale_1.swift?raw';
 import preferredLocaleKotlin from '@site/code_blocks/tools/paywalls_preferred_locale_2.kt?raw';
 import preferredLocaleReactNative from '@site/code_blocks/tools/paywalls_preferred_locale_3.ts.txt?raw';
+import preferredLocaleFlutter from '@site/code_blocks/tools/paywalls_preferred_locale_4.dart?raw';
+import preferredLocaleCapacitor from '@site/code_blocks/tools/paywalls_preferred_locale_5.ts.txt?raw';
 
 <RCCodeBlock tabs={[
     {
@@ -354,7 +356,16 @@ import preferredLocaleReactNative from '@site/code_blocks/tools/paywalls_preferr
         title: "React Native",
         content: preferredLocaleReactNative,
     },
-
+    {
+        type: 'flutter',
+        title: "Flutter",
+        content: preferredLocaleFlutter,
+    },
+    {
+        type: 'capacitor',
+        title: "Capacitor",
+        content: preferredLocaleCapacitor,
+    },
 ]}/>