enhance: Unify querycoord meta metrics

[congqixia]

Related to #36456

Unify collection/partition number metrics to collection manager in case of unwant missing modification

[sre-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: congqixia

The full list of commands accepted by this bot can be found here.

The pull request process is described here

Needs approval from an approver in each of these files:

• internal/querycoordv2/job/OWNERS [congqixia]
• internal/querycoordv2/meta/OWNERS [congqixia]

Approvers can indicate their approval by writing /approve in a comment
Approvers can cancel approval by writing /approve cancel in a comment

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 81.11%. Comparing base (af288a9) to head (4e5cb41).
Report is 3 commits behind head on master.

Additional details and impacted files

@@             Coverage Diff             @@
##           master   #38233       +/-   ##
===========================================
+ Coverage   68.85%   81.11%   +12.26%     
===========================================
  Files         289     1372     +1083     
  Lines       25508   191565   +166057     
===========================================
+ Hits        17563   155393   +137830     
- Misses       7945    30689    +22744     
- Partials        0     5483     +5483     

Components	Coverage Δ
Client	74.43% <ø> (∅)
Core	68.85% <ø> (ø)
Go	83.24% <100.00%> (∅)

Files with missing lines	Coverage Δ
internal/querycoordv2/job/job_release.go	81.51% <ø> (ø)
internal/querycoordv2/meta/collection_manager.go	86.68% <100.00%> (ø)

... and 1081 files with indirect coverage changes

[weiliu1031]

/lgtm