[TPU][V1] Fix exponential padding when max-num-batched-tokens is not a power of 2 (#16596)

Signed-off-by: NickLucche <nlucches@redhat.com>

vllm/v1/worker/tpu_model_runner.py

@@ -1040,9 +1040,11 @@ def _get_token_paddings(min_token_size: int, max_token_size: int,
 
     if padding_gap == 0:
         logger.info("Using exponential token paddings:")
-        while num <= max_token_size:
+        while True:
             logger.info("    %d", num)
             paddings.append(num)
+            if num >= max_token_size:
+                break
             num *= 2
 
     else: