MdeModulePkg/HiiDatabase: Fix Setup numeric default value incorrect issue
When default/manufacturing flag get removed from numeric varid, it can't
get default value from StructurePcd in 'UpdateDefaultSettingInFormPackage'
function since there is no EFI_IFR_DEFAULT_OP opcode in IFR file. Add a
chance to get numeric default value from StructurePcd in the case that
numeric minimum value will be used as default value.
Signed-off-by: Chen Lin Z <lin.z.chen@intel.com> Signed-off-by: Dandan Bi <dandan.bi@intel.com> Reviewed-by: Liming Gao <gaoliming@byosoft.com.cn>