Suggestion Misses' "Promote Selected" now opens the same bulk-add modal
shape as Suggestions' "Create Many" (editable phrases textarea +
lang/intent), prefilled with the selected misses' own text/language, and
submits via batchCreateSuggestions() so edited/added lines are honored.
Once that succeeds, the selected misses are deleted via the new
batchDeleteSuggestionMisses() (DELETE /admin/suggestion-misses/batch) so
they don't linger in the list now that they're suggestions. This is
best-effort: a failed cleanup doesn't undo the promotion, just surfaces a
separate warning notification.
Nyan Lin Paing