"Found unknown and unsupported uniform" warnings are logged in the game output

A few shader related warnings are being logged on the console after starting the game.

[08:21:38] [Render thread/WARN]: Found unknown and unsupported uniform Sampler2 in minecraft:pipeline/eyes
[08:21:38] [Render thread/WARN]: Found unknown and unsupported uniform Sampler1 in minecraft:pipeline/eyes
[08:21:38] [Render thread/WARN]: Found unknown and unsupported uniform Sampler1 in minecraft:pipeline/armor_decal_cutout_no_cull
[08:21:38] [Render thread/WARN]: Found unknown and unsupported uniform Sampler2 in minecraft:pipeline/energy_swirl
[08:21:38] [Render thread/WARN]: Found unknown and unsupported uniform Sampler1 in minecraft:pipeline/energy_swirl
[08:21:38] [Render thread/WARN]: Found unknown and unsupported uniform Sampler1 in minecraft:pipeline/entity_no_outline
[08:21:38] [Render thread/WARN]: Found unknown and unsupported uniform Sampler1 in minecraft:pipeline/armor_translucent
[08:21:38] [Render thread/WARN]: Found unknown and unsupported uniform Sampler1 in minecraft:pipeline/armor_cutout_no_cull
[08:21:38] [Render thread/WARN]: Found unknown and unsupported uniform Sampler1 in minecraft:pipeline/breeze_wind