Model type sbm_gwf: limit river flux to groundwater

[vers-w]

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Reproducible Example

This issue was found when running a simulation for the Hindon catchment.

Current behaviour

For the computation of the river flux to the groundwater (boundary condition) a check of the available river storage volume (routing) is missing. This can result in river fluxes larger than available river storage volume.

Desired behaviour

Limit river flux.

Additional Context

No response