fix: sync array, deque, and printing fixes across translations (#1973)

Synchronize the fixes from #1936, #1824, and #1961 across translated editions and normalize C# and Dart formatting. Move Java CI to Ubuntu 24.04 so its Java 11/17 checks can run.

en/docs/chapter_array_and_linkedlist/array.md

@@ -23,10 +23,10 @@ We can choose between two array initialization methods based on our needs: with
     ```cpp title="array.cpp"
     /* Initialize array */
     // Stored on stack
-    int arr[5];
+    int arr[5] = {};
     int nums[5] = { 1, 3, 2, 5, 4 };
     // Stored on heap (requires manual memory release)
-    int* arr1 = new int[5];
+    int* arr1 = new int[5] {};
     int* nums1 = new int[5] { 1, 3, 2, 5, 4 };
     ```