What is the ruling on urine drops during prayer for someone who takes precautions against it and it does not continue, and does the ruling on سلس (incontinence) apply to it?

The ruling on سلس (incontinence) does not apply to your situation. Rather, you must take precautions because the dripping stops with precautions. It is not permissible to pray while resisting the two 'impurities' (urination and defecation).