KVM: arm64: vgic-v5: Transfer edge pending state to ICH_PPI_PENDRx_EL2

KVM: arm64: vgic-v5: Transfer edge pending state to ICH_PPI_PENDRx_EL2

While it is perfectly correct to leave the pending state of a level
interrupt as is when queuing it (it is, after all, only driven by
the line), edge pending state must be transfered, as nothing will
lower it.

Reviewed-by: Sascha Bischoff <sascha.bischoff@arm.com>
Fixes: 4d591252bacb2 ("KVM: arm64: gic-v5: Implement PPI interrupt injection")
Link: https://sashiko.dev/#/patchset/20260319154937.3619520-1-sascha.bischoff%40arm.com
Link: https://patch.msgid.link/20260401103611.357092-8-maz@kernel.org
Signed-off-by: Marc Zyngier <maz@kernel.org>