test: timing integration tests

[nadir-akhtar]

Motivation:

These tests cover scenarios that specifically validate correct behavior on the cusp of a delay completing.

Modifications:

This PR adds the following:

• Performing a slash on the block before/after a partial/total withdrawal is no longer slashable
• Performing a slash on the block after a partial/total withdrawal is no longer slashable

This PR will also add the following:

• Performing a slash on the block before/after an operator fully deallocates
• Performing a slash on the block before/after an operator completes deregistration from an operator set
• Performing a slash on the block before/after an operator completes an allocation

Result:

These timing tests ensure that the correct behavior happens on either side of critical delays