feat(content): hidden test cases

backend/data/questions/jump-game.yaml

@@ -27,6 +27,12 @@ test_cases:
       expected: false
     - input: { nums: [5, 4, 3, 2, 1, 0, 0] }
       expected: true
+    - input: { nums: [1, 1, 1, 1, 1] }
+      expected: true
+    - input: { nums: [2, 0, 2, 0, 1] }
+      expected: true
+    - input: { nums: [1, 2, 3] }
+      expected: true
 
 description: |
   You are given an integer array `nums`. You are initially positioned at the array's **first index**, and each element in the array represents your maximum jump length at that position.