Fixed the new variable name in Prepare> Column:Text> Split dialog

[anastasia-mbithe]

This fixes #8085

@rdstern and @N-thony, this is ready for testing.

[berylwaswa]

I have tested the split dialog with the data provided by Roger and it works fine now.

Here is the data set:

PGStation.zip

I split the same variable thrice.
a) I first split on a space - and made the prefix into morning, and this worked fine.
b) Then I split again on the morning variable using the colon for the split. I called it hour, and it was split into hour and hour1.
c) Then I split again the morning variable using semi-colon for the split. I called it min, and it was split into min and min1.

It now changes the name from morning to the given prefixes.

[lloyddewit]

@anastasia-mbithe Thank you, this looks good to me.

@N-thony @berylwaswa May I merge this? Or do you prefer to wait and see if @rdstern has time to test/approve?

@rdstern we (@N-thony @berylwaswa and I) discussed the testing approach this morning. We agreed that, during the sprint, for lower risk PRs, that we may go ahead and merge without your test/approval. You would have the option to test later, and we could raise issues for any problems found (and fix these before the Feb build). I hope that's OK. If you prefer a different approach, then please let us know.

Thanks

[rdstern]

Perfect on the merging this week.