Pointed dripstone filling up a cauldron is not affected by the randomTickSpeed gamerule

to reproduce:

• create the appropriate setup for pointed dripstone to start filling up a cauldron
• wait until the cauldron is filled(and measure the time it took)
• empty the cauldron, set the randomTickSpeed gamerule to a ridiculous number and wait
• (X) the times are similar although the second one should be significantly faster