Allow parallel execution of live updates

[rafaelgallani]

related to:

• feat: parallel sync with live update #4511
• Serialized Live Update for containers with different images #6659

summary:

• removed the lock from Reconcile so we can run live updates in parallel
• added some descriptions around the newly added locks...
  • used basically for functions where maps are used
  • locks those whose had to be moved to the functions instead, since now Reconcile doesn't have them anymore

[rafaelgallani]

Please lmk if that's good... I also made it so that it shares the same max_parallel_updates setting used elsewhere too - as initially I ran into this since I thought that this setting should be shared by both regular builds and the live update.

[rafaelgallani]

idk if/how this should have tests for too... I mean. since we'd be changing the intended way of how it works. anyways.. just lmk anything really 😬

[rafaelgallani]

still not fully working - will do some more work locally and make it ready for review once again