fix(filemanager): resetting current state should include old verisons

[mmalenic]

Related to #614 and #615.

Changes

• Fixes the reset current state logic to include old versions of objects.
  • Now, when the query is executed, it flips is_current_state to false for old versions of objects too. Previously this was keeping every versioned object as "current".

I realised that versioned objects need to be reset in the is_current_state query too, because old versions of objects do not represent current state (thanks @reisingerf with this comment).

Performance is similar for this query as it was when version_id was included in the where clause. Note that I don't think there will be many more objects included in the set. Only one copy of a bucket/key combination should be included because the query only needs to check objects with is_current_state = true.