…ions problematic.

simulation was failing under MPI.
- Setting simulation phase values from their source phases now accounts for MPI.
- This code is built on the assumption that a phase and its corresponding simulation phase are on the same processor.
- The trajectory created by `Trajectory.simulate` will not bother setting up linkages or interphase connections since they are irrelevant for simulation.
- Bumped the minimum OpenMDAO version as specified in setup.py to 3.26.  We were already using this as the oldest supported version on CI.
- In `set_vals_from_phase` for simulation phase we now don't grab variable values from their ultimate source (from_src=False).
- The finite burn MPI test cases now include simulation.

…ate_mpi

…ate_mpi

…ication by time units.

This prevents units such as '1/s*s' intead of None.

Added a warnings context to simulation setup to ignore setup and unused options warnings that are not the fault of the user.

…ither states or initial_states in the phase being simulated.