fix: replace hardcoded sleeps with polling in session manager tests

[Hweinstock]

Problem

test_session_manager.py had hardcoded time.sleep(90) for extraction and time.sleep(15) for throttle avoidance. This is slow and unreliable. We want this test to able to run in under 10 minutes, but it currently takes much longer.

Solution

• Replaced sleep(90) with client.wait_for_memories().
• Reduced throttle sleep from 15s to 2s.
• Add to CI in parallel with 10 minute in parallel.

Testing

• ran in my dev account. Took about 8 min (but with hardcoded polling it took almost twice as long)

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[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
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Additional details and impacted files

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  Coverage        ?   90.84%           
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  Files           ?       42           
  Lines           ?     4041           
  Branches        ?      622           
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  Hits            ?     3671           
  Misses          ?      203           
  Partials        ?      167           

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