Subtitles are no longer shown when the master volume is set to zero

This behavior was introduced in 25w21a.

The bug

Subtitles do not appear when the in-game master volume is set to 0% (off), despite subtitles being enabled. This was not an issue before the 1.21.6 development cycle, and I have seen no mention of this change or issue in the release notes.

Steps to reproduce

1. Join a world.

2. Press Esc to pause the game and navigate to the Music & Sound options.

3. Enable the Show Subtitles setting and set the Master Volume slider to 0%.

4. Resume the game.

Observed behavior

No subtitles will be shown unless the in-game master volume is set to above 0%.

Expected behavior

Subtitles would still be shown for all sounds regardless of the in-game master volume, as was the case in versions prior to 25w21a.