confusion about the format of reference in ImageLoadStoreTest for rgb32

[SherryC41]

I have a confusion about dEQP-VK.image.load_store.without_any_format.buffer.r32g32b32_sfloat test
this case use SingleComponentFormat r32 as dstFormat in preparseDescriptors func,
preparseDescriptors
and only use imageStore once in shader,
shader
but the reference format is rgb32_sfloat

the expectation may seem unreasonable ?