dify - 💡(How to fix) Fix Web test shard jobs hide failure details until report merge [1 pull requests]

Problem

The web test workflow runs each shard with only the blob reporter. When a shard exits with a failure, the shard job log does not show the failed test cases or error details. The readable failure output is only produced later in the merge report job after the blob reports are downloaded and merged.

This makes it hard to diagnose which shard failed directly from the failing shard job, especially when the matrix job is the first place reporting the exit code.