Handle VertexAI error response 'Text too long'

[DonggeLiu]

The error is caused by 'Text too long'. Here is the message:
https://pantheon.corp.google.com/logs/query;aroundTime=2024-02-13T12:58:00.000Z;cursorTimestamp=2024-02-13T13:00:23.372992698Z;duration=PT15M;query=resource.type%3D%22k8s_container%22%0Aresource.labels.project_id%3D%22oss-fuzz%22%0Aresource.labels.location%3D%22us-central1%22%0Aresource.labels.cluster_name%3D%22llm-experiment%22%0Aresource.labels.namespace_name%3D%22default%22%0Alabels.k8s-pod%2Fbatch_kubernetes_io%2Fcontroller-uid%3D%228f6b14ca-f7a2-4653-85f1-90e542b95e79%22%20severity%3E%3DWARNING%0Atimestamp%3D%222024-02-13T13:00:23.372992698Z%22%0AinsertId%3D%225lnkmvgn576p21g1%22?project=oss-fuzz

The related logs before/after the message:
https://pantheon.corp.google.com/logs/query;query=resource.type%3D%22k8s_container%22%0Aresource.labels.project_id%3D%22oss-fuzz%22%0Aresource.labels.location%3D%22us-central1%22%0Aresource.labels.cluster_name%3D%22llm-experiment%22%0Aresource.labels.namespace_name%3D%22default%22%0Alabels.k8s-pod%2Fbatch_kubernetes_io%2Fcontroller-uid%3D%228f6b14ca-f7a2-4653-85f1-90e542b95e79%22%20severity%3E%3DWARNING;cursorTimestamp=2024-02-13T13:00:23.372992698Z;aroundTime=2024-02-13T12:58:00.000Z;duration=PT15M?e=-13802955&mods=logs_tg_prod&project=oss-fuzz

Handling this requires two tasks:

1. Investigate its root cause. This appears to happen in the code fixing step. We need to understand what the prompt was, and why it is overlong (e.g., Did the error parser parse too much text?)
2. Capture this error and log it so that the experiment won't break because of it.

[cjx10]

Example error:
https://pantheon.corp.google.com/logs/query;query=resource.type%3D%22k8s_container%22%0Aresource.labels.project_id%3D%22oss-fuzz%22%0Alabels.%22k8s-pod%2Fbatch_kubernetes_io%2Fjob-name%22%3D%22ofg-pr-148-jim%22;cursorTimestamp=2024-03-08T04:04:35.293228056Z;aroundTime=2024-03-08T04:04:34.772608384Z;duration=PT15S?project=oss-fuzz

Example prompt:
LLM: vertex_ai_code-bison-32k
output-eigen-_zn5eigen6matrixidlin1elin1eli0elin1elin1eed2ev

gs://oss-fuzz-gcb-experiment-run-logs/Result-reports/CodeFixing/text_too_long_prompt.txt