OvmfPkg/PlatformPei: Do not enable S3 support for confidential VMs #12966

Job	Run time
Analyze (MdeModulePkg, IA32)	11m 17s
Analyze (FmpDevicePkg, IA32,X64)	6m 17s
Analyze (CryptoPkg, X64)	15m 28s
Analyze (PcAtChipsetPkg, IA32,X64)	5m 44s
Analyze (DynamicTablesPkg, IA32,X64)	6m 13s
Analyze (IntelFsp2WrapperPkg, IA32,X64)	6m 10s
Analyze (StandaloneMmPkg, IA32,X64)	7m 6s
Analyze (SecurityPkg, IA32,X64)	8m 28s
Analyze (MdeModulePkg, X64)	11m 46s
Analyze (MdePkg, IA32,X64)	7m 30s
Analyze (CryptoPkg, IA32)	15m 19s
Analyze (UefiCpuPkg, IA32,X64)	8m 22s
Analyze (FatPkg, IA32,X64)	6m 10s
Analyze (SourceLevelDebugPkg, IA32,X64)	6m 11s
Analyze (ShellPkg, IA32,X64)	8m 40s
Analyze (IntelFsp2Pkg, IA32,X64)	6m 3s
Analyze (UnitTestFrameworkPkg, IA32,X64)	6m 24s
Analyze (PrmPkg, IA32,X64)	7m 12s
	2h 30m 20s

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