pick fix for potential deadlock with QMP resize and iothread

While the patch gives bdrv_graph_wrlock() as an example where the
issue can manifest, something similar can happen even when that is
disabled. Was able to reproduce the issue with
while true; do qm resize 115 scsi0 +4M; sleep 1; done
while running
fio --name=make-mirror-work --size=100M --direct=1 --rw=randwrite \
 --bs=4k --ioengine=psync --numjobs=5 --runtime=1200 --time_based
in the VM.

Fix picked up from:
https://lists.nongnu.org/archive/html/qemu-devel/2023-12/msg01102.html

Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>

debian/patches/series

@@ -8,6 +8,7 @@ extra/0007-migration-states-workaround-snapshot-performance-reg.patch
 extra/0008-Revert-x86-acpi-workaround-Windows-not-handling-name.patch
 extra/0009-hw-ide-ahci-fix-legacy-software-reset.patch
 extra/0010-ui-vnc-clipboard-fix-inflate_buffer.patch
+extra/0011-block-Fix-AioContext-locking-in-qmp_block_resize.patch
 bitmap-mirror/0001-drive-mirror-add-support-for-sync-bitmap-mode-never.patch
 bitmap-mirror/0002-drive-mirror-add-support-for-conditional-and-always-.patch
 bitmap-mirror/0003-mirror-add-check-for-bitmap-mode-without-bitmap.patch