Revert "boot: Use EFI_BOOT_MANAGER_POLICY_PROTOCOL to connect console devices"

Revert "boot: Use EFI_BOOT_MANAGER_POLICY_PROTOCOL to connect console devices"

This reverts commit b99bf5811850afdb2502ba37251c48348da63c82.

It seems that using this protocol on some firmwares to forcibly
initialize console devices may break handles (already opened file
handles and the device handle itself) that we rely on to access the
boot filesystem, making it impossible to load the selected entry.

It might be possible to get a new handle by querying for the device
handle by using its device path after calling into this protocol, but
this is untested. The firmware might also be so buggy that accessing
devices after using this protocol is impossible.

It seems prudent to revert this for now until some reliable way is found
to initialize console devices without introducing huge boot delays. Any
users on firmware where console devices cannot be accessed would have to
rely on disabling fastboot.

Fixes: #25737, #25846