[0.9.1] fix error info

[shikang-hangzhou]

What this PR does / why we need it?

Does this PR introduce any user-facing change?

How was this patch tested?

[gemini-code-assist]

Code Review

This pull request refactors the validation logic for an unsupported feature combination by moving the check from the worker initialization to the platform configuration setup. This is a good improvement as it centralizes configuration validation and provides a clearer, more actionable error message to the user earlier in the execution flow. My feedback focuses on improving the exception type for better semantic correctness.

[gemini-code-assist]

Using NotImplementedError here might not be the most semantically correct choice. This exception is typically raised when an abstract method that must be implemented by a subclass has not been, or when a feature is not yet implemented. Since this check validates a combination of user-provided configurations, a ValueError would be more appropriate. It clearly signals that the provided configuration values are incompatible.

Suggested change

	raise NotImplementedError(
	"DBO and mtp can't work at the same time. Please `export VLLM_ASCEND_ENABLE_DBO=0`")
	raise ValueError(
	"DBO and mtp can't work at the same time. Please `export VLLM_ASCEND_ENABLE_DBO=0`")