feat: add pk2shardId util method

[wayblink]

#35742

[sre-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: wayblink To complete the pull request process, please assign wxyucs after the PR has been reviewed. You can assign the PR to them by writing /assign @wxyucs in a comment when ready.

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

Needs approval from an approver in each of these files:

• pkg/util/OWNERS

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

[mergify[bot]]

@wayblink E2e jenkins job failed, comment /run-cpu-e2e can trigger the job again.

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 57.14286% with 9 lines in your changes missing coverage. Please review.

Project coverage is 72.27%. Comparing base (9886620) to head (237388e). Report is 728 commits behind head on master.

Files with missing lines	Patch %	Lines
pkg/util/typeutil/hash.go	57.14%	9 Missing :warning:

Additional details and impacted files

@@            Coverage Diff             @@
##           master   #35743      +/-   ##
==========================================
- Coverage   81.31%   72.27%   -9.05%     
==========================================
  Files        1238     1238              
  Lines      148061   148093      +32     
==========================================
- Hits       120397   107027   -13370     
- Misses      22889    36282   +13393     
- Partials     4775     4784       +9     

Files with missing lines	Coverage Δ
pkg/util/typeutil/hash.go	81.44% <57.14%> (-6.72%)	:arrow_down:

... and 231 files with indirect coverage changes

[mergify[bot]]

@wayblink E2e jenkins job failed, comment /run-cpu-e2e can trigger the job again.