Pipelines fail silently when a dynamic workflow:name exceeds 255 characters

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When a pipeline's name is set dynamically using the workflow:name directive with a variable, the pipeline fails silently if the resolved variable's length exceeds the 255-character limit. There is no error message in the UI, and the pipeline simply does not start.

This behavior is inconsistent with setting the name statically. If a hardcoded string longer than 255 characters is used in workflow:name, GitLab correctly fails the pipeline with a clear error message. The desired behavior is for the pipeline to fail with an error in both scenarios.