689: translations not generated for choice list used with search()

[lindsay-stevens]

• existing test case search_and_select didn't cover the multi-language case, which requires that itext is emitted for the inline selects.
• approach and details described in Survey._redirect_is_search_itext.

Closes #689

Why is this the best possible solution? Were any other approaches considered?

What are the regression risks?

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• included test cases for core behavior and edge cases in tests
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[lognaturel]

The item list for a select with search() isn't actually a true item list, it's used to configure the columns used in the attached file. A more realistic example would be the one I had in the test in the issue: a single element with a name of something like id, a label::en of something like label_en and a label::fr of label_fr. It doesn't particularly matter for testing purposes but could be confusing to come back to.

[lognaturel]

Thanks for this. This makes me kind of wish we weren't as obsessed with keeping old forms working but I continue to think it's important for our users.

Forgive me -- I'm going to go ahead and merge even though you marked this as draft! I have one suggestion for the tests that I'll do a follow-up PR for. I'd really like to put this release behind us and I think this is a very pragmatic approach and is easy to figure out with the comment.