No. Salt used in the designated softening system serves a different function from an approved cleaner. Pouring salt into the tub is not a general cleaning treatment.
Understanding this situation
A cleaner, descaler, detergent and rinse aid also have distinct purposes and locations. The appliance manual should identify which task is needed and what product is permitted.
A useful next step
Use the appropriate product exactly as instructed. Do not combine several because the dishwasher smells or dishes look marked. Persistent cleaning, drainage or heating problems need their own assessment rather than increasingly strong maintenance mixtures.
Manuals and supporting guidance
Model-specific instructions take priority. These references support the practical principles discussed here; they do not diagnose your appliance.