perf(s3stream): use for loop rather than stream in critical paths

[Chillax-0v0]

part of AutoMQ/automq#650
part of AutoMQ/automq#621

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (87098f5) 54.98% compared to head (a058058) 54.99%.

Additional details and impacted files

@@             Coverage Diff              @@
##               main     #894      +/-   ##
============================================
+ Coverage     54.98%   54.99%   +0.01%     
- Complexity     1243     1244       +1     
============================================
  Files           133      133              
  Lines          8534     8534              
  Branches        789      789              
============================================
+ Hits           4692     4693       +1     
  Misses         3425     3425              
+ Partials        417      416       -1     

Components	Coverage Δ
RocketMQ Broker	∅ <ø> (∅)
RocketMQ Common	5.80% <ø> (ø)
RocketMQ Controller	54.58% <ø> (ø)
RocketMQ Proxy	37.18% <ø> (ø)
RocketMQ Store	73.65% <ø> (+0.04%)	⬆️
RocketMQ Stream	∅ <ø> (∅)
RocketMQ Metadata	35.44% <ø> (ø)

see 1 file with indirect coverage changes