The sRGB flag is enabled when importing hdr files. This is disabled in PostEditChangeProperty, but remains enabled if we do not edit the file.
I think the sRGB flag should be disabled for hdr images.

The following files included in the engine content are also enabled for sRGB.

Steps to Reproduce

1. Export "/Engine/MapTemplates/Sky/DaylightAmbientCubemap.DaylightAmbientCubemap" to .hdr image
2. Import that image into the project
3. The compression setting for the file is HDR, but the sRGB flag is enabled.
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ComponentUE - Editor - Framework - Import and Export
Affects Versions4.23
Target Fix5.0
Fix Commit17799402
CreatedOct 23, 2019
ResolvedOct 13, 2021
UpdatedDec 1, 2021