Return Fields with time step values for transient simulations

[GuillemBarroso]

Before submitting the issue

• [X] I have checked for Compatibility issues
• [X] I have searched among the existing issues
• [X] I am using a Python virtual environment

Description of the bug

The displacement for a transient simulation can be requested for all time steps as

from ansys.dpf.post import examples, load_simulation
simulation = load_simulation(examples.download_transient_result())
disp = simulation.displacement()
print(disp)

This was introduced in this PR.

And the information of the displacement is showed as:

The times are shown as integers instead of the real time value as shown below:

Steps To Reproduce

Execute code above.

Which Operating System are you using?

Windows

Which Python version are you using?

3.10

Installed packages

N/A