[feature]Automatically check the workflow mode and workflow mode when creating a new workflow

[yuankang134]

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• I had searched in the issues and found no similar feature requirement.

Problem Description

1、demand background
(需求背景)

Since there is currently only one workflow mode and one workflow mode, a new logic is added when creating a new workflow, that is, when there is only one workflow mode and one workflow mode, the unique option is automatically selected for the user.
(由于目前工作流模式和工作流方式都只有一种，所以在新建工作流时新加一个逻辑，即工作流模式和工作流方式只有唯一一个时，自动为用户选择该唯一选项。)

Note: If there is only one workflow mode when creating a new project, it also needs to be automatically selected.
(备注：新建工程时若工作流模式只有一个，也需要自动选择。)

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solutions

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Are you willing to submit a PR?

• Yes I am willing to submit a PR!