Fixed the BeginJumpDescent conditions (#116)

Now the transition checks if the player is in the air to activate the state.

UOP1_Project/Assets/ScriptableObjects/Protagonist/Transitions/BeginJumpDescent.asset

   _conditions:
   - ExpectedResult: 1
     Condition: {fileID: 11400000, guid: 620f4efd93744084a8ac9ba272f093dc, type: 2}
+    Operator: 0
+  - ExpectedResult: 1
+    Condition: {fileID: 11400000, guid: c7258bdb2558a214f916c8b5b3c0fa1f, type: 2}
+  - ExpectedResult: 1
+    Condition: {fileID: 11400000, guid: c7258bdb2558a214f916c8b5b3c0fa1f, type: 2}
+    Operator: 0