Generating the same random number per column values

I have a table which in which I would like to generate random numbers in a specific format (e.g. TEST-10256). For which I have been using the below:

concat('TEST-' , uniform(10000, 99000, RANDOM()))

However I now want to update a table with these random numbers based on two columns, so the desired outcome would be this:

I am not sure how to keep the same random value per previously matching it on the same values in ROW1 & ROW2.