This commit reduces the number of freetext editor integration test suite
failures, in full isolation, from 8 to 6 by fixing the following issues
in the "move editor with arrows" block:
- The second and third test relied on the first test to enable freetext
editing mode. For isolation we now do it explicitly in both tests.
- The second test relied on the first test having created an editor. For
isolation we now create the editor explicitly in the second test.
- The third test relied on the previous tests for the editor numbering.
For isolation we change the editor numbering to the one after initial
document load. Since we can't have state (editors) from a previous
test anymore we can remove the `clearAll` call as well.
440d519326