generate calls with llava:latest randomly come back incomplete with format='json', stream=False

### What is the issue? I'm seeing random cases of `llava:lastest` failing to complete a response with `generate` REST calls set to `format='json'` and `stream=false`. I hadn't seen this issue before updating to 0.1.41. I was previously using 0.1.34 without issue, but I don't want to downgrade because I need the support for models added since 0.1.34. The incomplete responses will just have a bunch of tab escape chars in it and `'done': False` at the end. This appears to happen at random. Here's two sample outputs from a script where I preload the model, sequentially make some generate calls on a small set of images, and then unload it. (json formatting also specified in prompt) ``` {'model': 'llava:latest', 'created_at': '2024-06-06T18:25:42.216132768Z', 'response': '', 'done': True, 'done_reason': 'load'} rgb_0000.png: {'model': 'llava:latest', 'created_at': '2024-06-06T18:25:44.008509117Z', 'response': '{"objects_left_to_right:" \n \t \t \t \t \t \t \t \t \t \t \t \n \t \t', 'done': False} rgb_0001.png: {'model': 'llava:latest', 'created_at': '2024-06-06T18:25:45.727229854Z', 'response': '{"objects_left_to_right": ["milk carton", "coffee mug", "cereal box", "red can of soup"]} ', 'done': True, 'done_reason': 'stop', 'context': [733, 16289, 28793, 6620, 272, 6697, 356, 272, 2401, 477, 1749, 298, 1103, 390, 264, 1274, 28723, 1992, 19571, 1413, 9292, 28723, 28705, 13, 2287, 439, 28747, 28705, 13, 2287, 9830, 13721, 28730, 1828, 28730, 532, 28730, 1246, 4825, 7367, 4478, 1928, 477, 1749, 548, 345, 3423, 1928, 477, 1749, 548, 345, 4081, 1928, 477, 1749, 2242, 28752, 733, 28748, 16289, 4490, 28739, 13721, 28730, 1828, 28730, 532, 28730, 1246, 1264, 7367, 22626, 28729, 7548, 266, 548, 345, 1115, 496, 2443, 290, 786, 548, 345, 28717, 397, 282, 3890, 548, 345, 893, 541, 302, 18851, 2242, 28752, 28705], 'total_duration': 1648939331, 'load_duration': 1219805, 'prompt_eval_count': 1, 'prompt_eval_duration': 915187000, 'eval_count': 37, …