transformers

ceb7ba69 - Fix Gemma4 use_bidirectional_attention="all" mask behavior (#46079)

Fix Gemma4 use_bidirectional_attention="all" mask behavior (#46079) Fix Gemma4 all bidirectional attention mask Signed-off-by: Oliver Holworthy <1216955+oliverholworthy@users.noreply.github.com>