[connectors] update Confluence to use new internalIDs in content nodes and upsertions

[aubin-tchoi]

Description

• This PR aims at moving the Confluence connector to use the new internalIds (the ones with confluence-page- or confluence-space-) in both the content nodes and the upsertions.
• Tested locally:
  • we get the correct ID in the data_source_view when running this new version.
  • if we create the data_source_view with the old version of connectors then we don't see nodes in the AssistantBuilder.
  • applying the migration script turns the data_source_view we get when running the old version of connectors into the one we get when running the new one.

Risk

• everything is logged, missteps will be painful but recoverable

Deploy Plan

• Use the new button to stop (TBD)
• Deploy connectors
• Shortly after run migrations that changes agent configurations

[spolu]

Sorry for the delay Looks very reasonable