decrease polling rate for QuantumJob

[senecameeks]

For simple circuits RT time from our hardware is:

1. Engine without stream: 3.3s
2. Engine with streaming: 1.14s

Increasing our polling rate to 1s enables sending 2x simultaneous jobs without explicitly increasing our quota, with minimal increase to RT latency (250ms)

Fixes: b/372751875

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 97.83%. Comparing base (5c1ccda) to head (a89971a).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #6762   +/-   ##
=======================================
  Coverage   97.83%   97.83%           
=======================================
  Files        1077     1077           
  Lines       92577    92577           
=======================================
+ Hits        90570    90574    +4     
+ Misses       2007     2003    -4     

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