2D raw_dt hook: recompute and store state % dt from the adaptive
CFL condition, then return it (Q2c; body lifted verbatim from the
pre-engine run_solver_steps_2d loop).
| Type | Intent | Optional | Attributes | Name | ||
|---|---|---|---|---|---|---|
| class(solver_run_context_2d_t), | intent(inout) | :: | ctx |