fix: next_tempo should always return next upcoming epoch

Author: zyzniewski-reef

tests/e2e_tests/utils/chain_interactions.py

@@ -105,6 +105,7 @@ def next_tempo(current_block: int, tempo: int, netuid: int) -> int:
     Returns:
         int: The next tempo block number.
     """
+    current_block += 1
     interval = tempo + 1
     last_epoch = current_block - 1 - (current_block + netuid + 1) % interval
     next_tempo_ = last_epoch + interval