Mark Johnson 6401ca4959 MDL-79224 core: Make Binary datafilter redisplay selected value
The Binary datafilter was returning a single value where all parts of
the API expect an array of values. This was working in most places by
fluke as this value was a single-character string, so doing $value[0]
returned the value. However, it was not working when deciding which
option to mark as selected when re-displaying the filter.

This change makes the filter return an array containing a single integer
value to match the rest of the API, then internally selects that single
value for comparison when deciding if an option should be selected.
2023-10-02 11:50:44 +01:00
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