feat: remove maxScheduleCount and optimize register in v2

[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

Attention: 9 lines in your changes are missing coverage. Please review.

Comparison is base (f1584cf) 51.45% compared to head (99d58ad) 51.44%.
Report is 2 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3001      +/-   ##
==========================================
- Coverage   51.45%   51.44%   -0.02%     
==========================================
  Files         162      162              
  Lines       22171    22152      -19     
==========================================
- Hits        11407    11395      -12     
+ Misses      10106    10101       -5     
+ Partials      658      656       -2     

Flag	Coverage Δ
Object-compatibility-e2etests	?
e2etests	?
unittests	51.44% <57.14%> (-0.02%)	⬇️

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

Files	Coverage Δ
scheduler/config/config.go	90.42% <ø> (+0.91%)	⬆️
scheduler/resource/peer.go	71.95% <ø> (-0.12%)	⬇️
scheduler/scheduling/scheduling.go	84.40% <100.00%> (-0.25%)	⬇️
scheduler/service/service_v2.go	85.29% <40.00%> (+0.19%)	⬆️

... and 1 file with indirect coverage changes