The photo in our book of the 50th anniversary Symposium has a photo of that landing in LR359 and they are four-blade props. The transcript of Winkle Brown's talk tells us that from the beginning the deck-landing Mosquitos were fitted with four-bladed non-feathering de Havilland propellors but although he explains the difficulty that caused, he didn't say why they had them.
Other photos in that chapter also have four-bladers and the aeroplanes are TS449 one of a pair of prototype TR/TF Mk.33s which also had RATOG fitted, LR387 the second ptototype TR Mk33 and VT724 a TR Mk37