test(e2e): parallelize tests to improve CI times

[p0mvn]

Background

Since our tests are now independent, we can parallelize them to improve CI times

Suggested Design

Add s.T().Parallel() to the following:

• TestIBCTokenTransferAndCreatePool
• TestSuperfluidVoting
• TestAddToExistingLockPostUpgrade
• TestAddToExistingLock
• TestTWAP
• TestExpeditedProposals

Note:
TestStateSync cannot be parallelized

Acceptance Criteria

• tests are parallelized
• benchmark CI time improvement
• ensure that the following still work locally:
  • make test-e2e-debug
  • make test-e2e-short

[p0mvn]

ref: #2100

[p0mvn]

Might not be as simple as adding s.T().Parallel() due to the need for synchronizing some shared variables.

[ValarDragon]

I also am suspicious that this is where the big speedup will come from, vs block time changes

Its a bit hard to see right now due to #2653 , but my recollection from before was that the time from traces looked to mostly be in waiting for blocks to occur.

[czarcas7ic]

Closing in favor of https://github.com/orgs/osmosis-labs/projects/1/views/66?pane=issue&itemId=18877686