Refactor waiting for Windows machines and nodes in the e2e tests

waitForWindowsMachines should take in a list of Machines to wait for, instead of having to do the logic to figure out which machines.

There can be a helper function which takes in a MachineSet as a parameter and returns its associated Machines.

This ticket can also be used to:

• rework the use of the waitForWindowsNodes to update the globals gc.byohNodes and gc.machineNodes.
• introduce wrappers for waitForWindowsNodes to clear demarcate whether we are waiting for Machines or BYOH nodes

Acceptance Criteria:

• A better workflow is achieved in the e2e suite