Incorrect model IDs for Vertex Anthropic

[eparreno]

The model IDs currently have the date claude-haiku-4-5@20251001 but if you check Vertex examples, the date is not needed to make API calls. I tried in OpenCode and it fails with the date, it should be removed. Before opening a PR I'd like to make sure I'm not missing anything.

ENDPOINT="aiplatform.googleapis.com"
LOCATION_ID="global"
PROJECT_ID="foo"
MODEL_ID="claude-haiku-4-5"
METHOD="streamRawPredict"

[eparreno]

Wrong repo 🤦