pfSense/pfsense 00680d3src/etc rc.bootup, src/usr/local/www system_advanced_misc.php

Add GUI components for MDS mitigation. Implements #9532

While here, add option to disable PTI display in sysinfo widget.
Implements #9323

(cherry picked from commit 42c48efe1c326273079ac38176098a1993f8ae88)
DeltaFile
+36-0src/usr/local/www/system_advanced_misc.php
+15-2src/usr/local/www/widgets/widgets/system_information.widget.php
+5-0src/etc/rc.bootup
+56-23 files

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