The bug

When lighting TNT using flint and steel or with a fire charge, the minecraft:item.flintandsteel.use or minecraft:item.firecharge.use sound is not played. This is inconsistent with all other uses of flint and steel and all other uses of fire charges, which all play the sound.

How to reproduce

1. Place TNT
2. Ignite the TNT using flint and steel
   No click sound is heard from the flint and steel

Expected behavior

The minecraft:item.flintandsteel.use or the minecraft:item.firecharge.use sound would be played when igniting TNT with flint and steel or with a fire charge.

Code analysis

Code analysis by Avoma can be found in this comment.