Move action.hold_request_cancel_cause inserts for i18n

Move action.hold_request_cancel_cause inserts to 950.data.seed-values.sql
so they're picked up for translation.

Signed-off-by: Pasi Kallinen <pasi.kallinen@pttk.fi>
Signed-off-by: Remington Steed <rjs7@calvin.edu>
Signed-off-by: Dan Wells <dbw2@calvin.edu>