feat(s3stream): copy write based on max part size

[superhx]

AutoMQ/automq#618

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (d3d9a52) 54.98% compared to head (acd7540) 55.01%.

Additional details and impacted files

@@             Coverage Diff              @@
##               main     #883      +/-   ##
============================================
+ Coverage     54.98%   55.01%   +0.03%     
- Complexity     1243     1247       +4     
============================================
  Files           133      133              
  Lines          8534     8534              
  Branches        789      789              
============================================
+ Hits           4692     4695       +3     
  Misses         3425     3425              
+ Partials        417      414       -3     

Components	Coverage Δ
RocketMQ Broker	∅ <ø> (∅)
RocketMQ Common	5.80% <ø> (ø)
RocketMQ Controller	54.58% <ø> (ø)
RocketMQ Proxy	37.28% <ø> (+0.10%)	⬆️
RocketMQ Store	73.65% <ø> (+0.04%)	⬆️
RocketMQ Stream	∅ <ø> (∅)
RocketMQ Metadata	35.44% <ø> (ø)

see 2 files with indirect coverage changes