texture_content.json has duplicate key/value pairs for concrete

[kf106]

public/textures/

I checked 1.15.2 - which has duplicates for all concrete and concrete_powder entries, e.g for white_concrete and white_concrete_powder (I checked all sixteen colors and they're all duplicated):

grep texture_content.json -n -e "white_concrete"
1655:    "name": "white_concrete",
1719:    "name": "white_concrete_powder",
5675:    "name": "white_concrete",
5739:    "name": "white_concrete_powder",

I also checked white and brown concrete for texture_content.json in 1.19.1 - same thing.