R1:b6f132f04f06

TransactionEditor: micro-optimize the "creation finder"

Summary:
The foreach starting at old line 1305-1311 was designed to look for a specific transaction type.

When we have found that, let's stop that loop, so, we save some CPU cycles.

Test Plan:
Note that getTransactionType() has not side-effects.

Test some applications - like Pholio - that use the TransactionEditor:

- Create a new Pholio and Save
- Save it again without changes.
- Save it again with changes.

Everything still working normally.