[rom_ext] Prevent incorrect MinimumSecurityVersion BootSvc call
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@cfrantz is already working on this.
Since May 22, 2024.
SW:ROM_EXT
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Description
### Description
If ROM_EXT receives a SetMinimumSecurityVersion boot services message for a value that is higher than the actively running owner firmware image (e.g. `coalesce (nextBootSlot, primaryBootSlot)`), then the request should be ignored. This prevents help prevent a denial of service attack with minimum security version.
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