chore(issues): Add flag for resolve in upcoming release

[roggenkemper]

this pr adds a flag for the resolve in upcoming release, since that will initially be behind a feature flag

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 80.02%. Comparing base (51ff715) to head (4414320).
Report is 7 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master   #70898      +/-   ##
==========================================
- Coverage   80.02%   80.02%   -0.01%     
==========================================
  Files        6508     6508              
  Lines      291269   291275       +6     
  Branches    50202    50203       +1     
==========================================
+ Hits       233093   233095       +2     
- Misses      57742    57746       +4     
  Partials      434      434              

Files	Coverage Δ
src/sentry/conf/server.py	89.44% <ø> (ø)
src/sentry/features/temporary.py	100.00% <100.00%> (ø)

... and 7 files with indirect coverage changes