I realize this is an ancient issue that has been discussed by many and a consensus reached but being relatively new to this forum and still in the process of reading the various posts, I just found this one and have something to add.
First I need to note I will be turning 70 in a few days so I've had a chance to see a lot of "classic" films in first release. As a child my parents saw to it our family say as many Disney features as possible. Disney was one of the companies that also pioneered soundtrack albums even through the 1940s were the days of the 78rpm record.
In my record collection I have the RCA Victor three disk set of Pinocchio. It features all the major songs from the film and includes the introductory dialog for each song.
For those who were wondering if the "missing" dialog might have been something added in a second, third, or higher numbered release, I can verify those lines are there on the 1940s record album.
This next part has nothing to do with the above thread but I'm tossing this in anyway. When 33 /1/3 LPs became the standard for recordings Disney again was there with soundtrack albums but this time on there own label Disneyland Records. Pinocchio was the second LP released in their initial distribution (#4002). It contained the full musical score of the film but no dialog. When listening to the the LP, since this dialog had been burned into my memory as a child, my mind would supply the missing dialog. Then I had a brainstorm. What would happen if I played to old 78 rpm record and cued it up to the same song on the LP. I should note these LP were mono records.
Setting up two record players next to each other I'd listed to the LP first to catch the first notes of the song then find those same notes on the LP and hold the LP still while starting up the 78. To my amazement everything stayed in sync and gave an aural experience somewhat like stereo but with all the dialog voices coming from the 78 player.
So rest assured, Jiminy Cricket issued his confirmation "Right!" in the original release of Pinocchio.