Subtitles for turning copper bulb on or off display raw translation string

The bug

Subtitles for turning on copper bulb display raw translation string.

To reproduce

1. Turn on subtitles.
2. Turn on a copper bulb.

Expected result

The subtitles would be translated.

Observed result

Subtitles show "subtitles.block.copper_bulb.turn_on" or "subtitles.block.copper_bulb.turn_off".