docs: Update meshing doc after switching to solver

[mkundu1]

Before switch:

>>> help(meshing)
Help on Meshing in module ansys.fluent.core.session_meshing object:

class Meshing(ansys.fluent.core.session_pure_meshing.PureMeshing)
 |  Meshing(fluent_connection: ansys.fluent.core.fluent_connection.FluentConnection, scheme_eval: ansys.fluent.core.services.scheme_eval.SchemeEval, file_transfer_service: typing.Any | None = None, start_transcript: bool = True, launcher_args: Optional[Dict[str, Any]] = None)
 |
 |  Encapsulates a Fluent meshing session.
 |
 |  A ``tui`` object
 |  for meshing TUI commanding, and ``meshing`` and ``workflow``
 |  objects for access to task-based meshing workflows are all
 |  exposed here. A ``switch_to_solver`` method is available
 |  in this mode.

<more lines>

After switch:

>>> help(meshing)
Help on Meshing:

<ansys.fluent.core.session_meshing.Meshing object>
    Meshing session is not usable anymore after switching to solver mode.

[mkundu1]

@prmukherj This is what I figured from #3949 discussion. Let me know if we are looking for any different behaviour.

[prmukherj]

@prmukherj This is what I figured from #3949 discussion. Let me know if we are looking for any different behaviour.

yes, @mkundu1, this was exactly our requirement. However, I had tried this as well. Don't know why it didn't work. Will test it again.

[prmukherj]

@prmukherj This is what I figured from #3949 discussion. Let me know if we are looking for any different behaviour.

yes, @mkundu1, this was exactly our requirement. However, I had tried this as well. Don't know why it didn't work. Will test it again.

Great, tested. Working now, no idea what was going wrong. Thank you @mkundu1.