Fix LT-22189: FW9.2 does much worse with data entry than 9.1

[jtmaxwell3]

To fix https://jira.sil.org/browse/LT-22189, I had to revert #182 and also move a try ... catch ... finally wrapper from DefaultCreateNewUiObject up into CreateNewUiObject so that it would apply to non-default objects such as Pronunciation.

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This change is 

[jasonleenaylor]

Src/FdoUi/FdoUiCore.cs line 420 at r1 (raw file):

		{
			CmObjectUi newUiObj = null;
			try

This is safe if DefaultCreateNewUiObject can only be called from 'CreateNewUiObject', did you verify that?

[jtmaxwell3]

Yes. The other place DefaultCreateNewUiObject is called from doesn't have a mediator, so moving the try .. catch up doesn't change anything.

[jasonleenaylor]

Reviewed 7 of 7 files at r1, all commit messages.
Reviewable status: complete! all files reviewed, all discussions resolved (waiting on @jtmaxwell3)