feat(profiling): Add environment condition for profile chunks

[Zylphrex]

The environment condition was missing.

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 85.71429% with 1 line in your changes missing coverage. Please review.

:white_check_mark: All tests successful. No failed tests found.

Files with missing lines	Patch %	Lines
src/sentry/profiles/flamegraph.py	85.71%	1 Missing :warning:

Additional details and impacted files

@@            Coverage Diff             @@
##           master   #93532      +/-   ##
==========================================
+ Coverage   84.35%   88.00%   +3.64%     
==========================================
  Files       10319    10319              
  Lines      594698   594702       +4     
  Branches    23129    23129              
==========================================
+ Hits       501687   523372   +21685     
+ Misses      92518    70837   -21681     
  Partials      493      493