Likley this happens cuz u try to generate vs proj against the PS4 SDK version which is specifed in the official docs, well, the source files require a different PS4 SDK version and the docs lie…
try to switch your PS4 SDK to 9.5 then try to generate engine sln.
btw SDK version is listed in:
UE_5.0\Engine\Platforms\PS4\Source\Programs\UnrealBuildTool\PS4PlatformSDK.cs