feat: avoid hot resolve in grpc

[gaius-qi]

Description

Related Issue

Motivation and Context

Screenshots (if appropriate)

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Documentation Update (if none of the other choices apply)

Checklist

• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.

[codecov]

Codecov Report

Merging #2884 (4a48421) into main (4d4ea8d) will decrease coverage by 0.04%.
Report is 1 commits behind head on main.
The diff coverage is 40.74%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2884      +/-   ##
==========================================
- Coverage   50.98%   50.95%   -0.04%     
==========================================
  Files         161      161              
  Lines       21760    21779      +19     
==========================================
+ Hits        11094    11097       +3     
- Misses      10005    10018      +13     
- Partials      661      664       +3     

Flag	Coverage Δ
e2etests	?
unittests	50.95% <40.74%> (-0.04%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files	Coverage Δ
scheduler/config/config.go	89.13% <100.00%> (+0.15%)	⬆️
scheduler/service/service_v1.go	79.68% <100.00%> (ø)
internal/dynconfig/dynconfig.go	70.00% <42.85%> (+3.33%)	⬆️
client/config/dynconfig_manager.go	54.95% <14.28%> (-1.46%)	⬇️
scheduler/config/dynconfig.go	21.49% <14.28%> (-0.23%)	⬇️

... and 2 files with indirect coverage changes