Link the VFolder name to open the Folder Explorer in Session detail Panel

[yomybaby]

In versions of Backend.AI Core 24.12.0 and earlier, the vfolder_nodes field of compute_session_node is not provided.

There are a total of 2 Backend.AI Core responsive PRs for this issue:

1. https://github.com/lablup/backend.ai/pull/3461
2. https://github.com/lablup/backend.ai/pull/2987

Backend.AI WebUI responsive PRs:

1. use vfolder_mounts field in compute_session_node and mounts field in legacy compute_session (manager < 24.12.0)
   https://github.com/lablup/backend.ai-webui/pull/3038
   1. vfolder_mounts field gives only vfolder’s id. So we need to use mounts field in legacy compute_session to get vfolder’s name. (vfolder_mounts and mounts fields are in same order)
2. use vfolder_nodes field in compute_session_node (manager >= 24.12.0)
   https://github.com/lablup/backend.ai-webui/pull/3052