[DSIP-104][API&UI] Suggest remove import and export function

[SbloodyS]

Search before asking

• I had searched in the DSIP and found no similar DSIP.

Motivation

There are many bugs in the current implementation, and there is no good way to avoid these bugs. So I suggest remove these functions.

Design Detail

No response

Compatibility, Deprecation, and Migration Plan

No response

Test Plan

No response

Code of Conduct

• I agree to follow this project's Code of Conduct

[njnu-seafish]

In the current version, the import and export functionality is fully usable—only the taskcode reference issues in special task types like ConditionTask and SwitchTask need to be fixed.
To my knowledge, many customers frequently use the import/export feature when migrating between development and production environments. Moreover, special task types such as ConditionTask and SwitchTask are very limited in number, so once the bugs related to these task types are resolved, the feature remains perfectly usable.

import workflow case:
#17771
#17772

copy workflow case:
#17773
#17774

[ruanwenjun]

+1.
The import/export functionality currently incurs significant maintenance costs and is overly tied to metadata. Whenever we add a new task type or metadata type, it may involve changes to that feature.
If we could provide a workflow modification feature directly based on the YAML format(like argo), it might be more user-friendly and have lower maintenance costs.