Do not dismiss brand insights if a first brand insight has been validated

[teolemon]

What

• Do not dismiss brand insights if a first brand insight has been validated
• https://world.openfoodfacts.org/product/3439496526096/metro
• In that case, there was a brand and a subbrand

[raphael0202]

We don't dismiss subbrand insights, it's possible to validate several brands on Robotoff.
We don't have any prediction anymore for this product (https://robotoff.openfoodfacts.org/api/v1/predictions?barcode=3439496526096), but we have 3 validated insights (https://robotoff.openfoodfacts.org/api/v1/insights?barcode=3439496526096), which i don't really understand.
We should always keep the predictions (unless the image or product was deleted, which is not the case here).