LocalVertexMap: the semantic is not consistent with default vertex map

[sighingnow]

Describe your problem

Why? Any workaround?

The behaviour that you expect to work:

Additional context

Add any other context about the problem here.

[siyuan0322]

You can't detect which vertex resides on which hosts without an edge file together. Workaround is to use the batch mode load_from.

[siyuan0322]

Add vertex only to local vm is not supported by design, and indeed it has limitations compared with global vm. See also Alibaba/GraphScope#2310

[sighingnow]

Needs to be fixed. Otherwise it is toooooo strange for end users for switch from the default one to local vertex map...

[siyuan0322]

Okay~ It could be treated as follow up features.