Blocks of redstone use "metal" block sounds, despite redstone not being a metal

The bug

The placement, breaking, walking on, etc. sounds for minecraft:redstone_block are the higher-pitched sounds associated with metal blocks. This does not make much sense, as redstone is not a type of metal, unlike iron or gold which are. As a result, it'd be expected that the "stone" sound, rather than the "metal" sound, would be used for redstone blocks.

This is a separate report from MC-265459 since it's even more inconsistent: redstone is not considered a "precious" resource (it cannot power beacon beams), making its use of the metal sound set make even less sense.

This was originally included under MC-91091. However, many of the cases previously included in that ticket have since been split into other tickets and officially fixed (recent examples include MC-182820 and MC-200484), so I'm giving this one a chance on its own as well.

How to reproduce

1. Obtain redstone blocks

2. Place, break, walk on and/or fall on these blocks

Expected results

The "stone" set of block sounds would be used.

Actual results

The "metal" set of blocks sounds are used instead.

How to fix

Fixing this is as simple as changing these blocks from the metal sounds over to the stone sounds (or perhaps giving them their own, new, distinct sounds).