Flattened monster eggs/infested stones do not have "stone" sound assigned

When the monster_egg block ID was flattened in 1.21.10, its new split IDs were not assigned a sound property.

This causes them to use an incorrect pitch for the breaking sound that differs from other blocks assigned the stone sound set, so players can tell the difference between normal Stone and Infested Stone by sound (not intended).

To Reproduce

1. Open the blocks.json file from the Bedrock Edition 1.21.10 resources.

2. Find the infested_stone entry.

3. Notice all the infested blocks are missing a "sound" property.

Expected Result

Infested blocks are assigned the "stone" sound set in the blocks.json for vanilla_1.21.10. Currently, they are only assigned sounds as of vanilla_1.21.20. They sound identical to their non-infested counterparts in all versions.

Observed Result

Infested blocks are not assigned any sound set, causing them to fall back to the "normal" set. This makes them sound different from their non-infested counterparts.