When IOStore is enabled, -createchunkinstall separates out chunk-non-0 pak files but not utoc/ucas files

The -createchunkinstall option is used to separate out chunk>0 CDN/patch data from the main packaged app, but when using it with the IOStore enabled, only the pak files are separated out but not the utoc/ucas files. This appears to be an oversight.

1. Create a Blueprint project and configure it so that certain assets are in different chunks.  A sample project is available [Link Removed].
2. Package from the command line with the something like
   Engine\Build\BatchFiles\RunUAT.bat BuildCookRun -nop4 -utf8output -nocompileeditor -skipbuildeditor -cook  -project="C:/Projects/ChunkTest/ChunkTest.uproject"  -unrealexe="C:\UE5Main\Engine\Binaries\Win64\UnrealEditor-Cmd.exe" -platform=Windows -stage -archive -package -build -pak -iostore -compressed -prereqs -archivedirectory="C:/Projects/ChunkTest" -manifests -clientconfig="Development" -nocompile -nocompileuat -createchunkinstall -chunkinstalldirectory="C:/Projects/ChunkTest/CDNChunks" -chunkinstallversion=1.0
3. Note the generated directory CDNChunks and Windows folders. 

The CDNChunks\Windows\1.0\pakchunk1001 folder contains the chunk 1001 pak file, and the Windows folder contains the pak0's file as well as chunk 1001's utoc/ucas files.

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