[Shader] Mipmap of block atlas texture inconsistent in deferred pipeline

[GeForceLegend]

Description of Issue

Detailed info is provided in Iris #2501. Optifine's behavior in provided example is same as Iris.

Steps to Reproduce

1. Set certain colortex to block atlas texture in composite pipeline (like texture.composite.colortex6 = minecraft:textures/atlas/blocks.png)
2. Set output of composite program to the block atlas texture with mipmaps (like textureLod(colortex6, texcoord, 4.0), colortex6 has been set to block atlas texture as above)
3. Switch held item and see sometimes mipmap of block atlas texture is on but sometimes off

OptiFine Version

1.21.1 J1

Installation Method

Standalone

Log Files/Crash Reports

Looks like nothing useful in log.

F3 Debug Screenshot

Additional Information