NocoBase v2.0.0-alpha.49: Allow to choose whether to show snapshot or latest record in the approval process UI

[Workflow: Approval] Allow to choose whether to show snapshot or latest record in the approval process UI by @mytharcher

[client] optimize validation messages for subtable (#8001) by @katherinehhh
[Telemetry: Prometheus] Upgrade @opentelemetry/exporter-prometheus by @2013xile
[Action: Import records Pro] Enhanced error messages for asynchronous tasks to provide users with specific reasons for task failures by @mytharcher

[flow-engine] Fixed an issue where the current record variable could not be correctly triggered for resoving in the details block. (#8004) by @gchust
[client] Fix table block selection and deletion issues for composite keys (#7978) by @katherinehhh
[Action: Export records] fix missing system fields in exportable field list (#8002) by @katherinehhh
[Collection: Tree] Fix path table update failures caused by incorrect tree parent-field lookup (#8000) by @2013xile
[Collection field: Many to many (array)] Fixed the issue where the m2m array field in the subtable could not be updated (#7998) by @cgyrock
[Departments] Fix the issue where department associated fields could not be edited (#7462) by @heziqiang
[Workflow: Approval] Fix permission issue when get approvalRecords.reassignee due to RemoteSelect changed by @mytharcher