Add max and ultra reasoning efforts to the SDKs (#39662)

## What changed

- Add `max` and `ultra` to the TypeScript `ModelReasoningEffort` type.
- Add matching Python `ReasoningEffort` members and preserve them when SDK artifacts are regenerated.
- Update the Python model-selection examples to rank the new effort levels.

## Testing

- Cover serialization of both new Python enum members while continuing to accept unknown future values.

GitOrigin-RevId: 1412b77bdbb2530f5d38921cdea971dd34458353

sdk/python/examples/13_model_select_and_turn_params/async.py

@@ -28,6 +28,8 @@ REASONING_RANK = {
     "medium": 3,
     "high": 4,
     "xhigh": 5,
+    "max": 6,
+    "ultra": 7,
 }
 
 

sdk/python/examples/13_model_select_and_turn_params/sync.py

@@ -26,6 +26,8 @@ REASONING_RANK = {
     "medium": 3,
     "high": 4,
     "xhigh": 5,
+    "max": 6,
+    "ultra": 7,
 }