Fix Java examples using Kotlin-specific syntax

Java examples were incorrectly using Kotlin-specific syntax like listOf() and mapOf(). This commit fixes the issue by:

- Added language-specific parameter support to getParamExample() method in Kotlin.php
- Created getKotlinMapExample() and getJavaMapExample() helper methods for proper syntax generation
- Updated getPermissionExample() to support both Java (Arrays.asList) and Kotlin (listOf) syntax
- Added new javaParamExample Twig filter that generates Java-compatible syntax
- Updated Java example templates to use javaParamExample filter
- Fixed import ordering in Java templates to follow Java conventions (java.* imports first, then project imports)

Now Java examples correctly use:
- Arrays.asList() instead of listOf()
- new HashMap<String, Object>() {{ put() }} instead of mapOf()
- Collections.emptyList() instead of listOf()

Author: ChiragAgg5k

.github/workflows/tests.yml

@@ -94,7 +94,7 @@ jobs:
       - name: Setup PHP with PECL extension
         uses: shivammathur/setup-php@v2
         with:
-          php-version: ${{ matrix.php-version }}
+          php-version: '8.3'
           extensions: curl
 
       - name: Install