Description of problem:
when test script run "timeout -v --preserve-status 4s bash -c 'virsh list'", command exit with TERM

Version-Release number of selected component (if applicable):
libvirt-client-8.0.0-19.module+el8.8.0+18453+e0bf0d1d.x86_64
kernel version:4.18.0-477.10.1.el8_8.x86_64
polkit-debuginfo-0.115-13.el8_5.2.x86_64
polkit-0.115-13.el8_5.2.x86_64
polkit-pkla-compat-0.1-12.el8.x86_64
polkit-debugsource-0.115-13.el8_5.2.x86_64
polkit-libs-0.115-13.el8_5.2.x86_64

How reproducible: 100%

Steps to Reproduce:
1. create a shell script as below:
#!/bin/bash
set -x
echo $$
timeout -v --preserve-status 4s bash -c "virsh list && echo $$"
timeout -v --preserve-status 4s bash -c "ls -l && echo $$"

2. run test script and got output as below:

1. sh test-juzhou.sh
   + echo 8192
   8192
   + timeout -v --preserve-status 4s bash -c 'virsh list && echo 8192'
   timeout: sending signal TERM to command ‘bash’
   + timeout -v --preserve-status 4s bash -c 'ls -l && echo 8192'
   total 9200
   rw------. 1 root root 22659 Apr 1 11:25 anaconda-ks.cfg
   -rwxrwxrwx. 1 root root 10151 Apr 13 11:16 irqstat.py
   drwxr-xr-x. 2 root root 4096 Apr 14 03:06 libvirt
   rw-rr-. 1 root root 67144 Apr 1 20:13 memoryinfo
   rw-rr-. 1 root root 26602 Apr 1 11:27 my-ks-post.log
   rw-rr-. 1 root root 4 Apr 1 11:25 NETBOOT_METHOD.TXT
   rw------. 1 root root 24198 Apr 1 11:27 original-ks.cfg
   rw-r----. 1 root root 3327246 Apr 1 20:14 ovs-vswitchd.log
   rw-rr-. 1 root root 331210 Apr 1 20:14 ovs-vswitchd.log.gz
   rw-rr-. 1 root root 723364 Apr 1 20:13 ovs-vswitchd-maps
   rw-rr-. 1 root root 632196 Apr 1 20:13 ovs-vswitchd-numa_maps
   rw-rr-. 1 root root 2060356 Apr 1 20:13 qemu-maps
   rw-rr-. 1 root root 2141430 Apr 1 20:13 qemu-numa_maps
   rw-rr-. 1 root root 9 Apr 1 11:25 RECIPE.TXT
   drwxr-xr-x. 2 root root 4096 Apr 13 23:47 rt-kernel
   drwxr-xr-x. 2 root root 4096 Apr 13 23:56 stock-kernel
   rw-rr-. 1 root root 150 Apr 14 03:16 test-juzhou.sh
   8192

3. run in shell interactive mode

1. timeout -v --preserve-status 4s bash -c "virsh list && echo $$"
   Id Name State
   --------------------

2278

4. run test script with '.'
[root@dell-per750-03 ~]# . ./test-juzhou.sh
++ echo 2278
2278
++ timeout -v --preserve-status 4s bash -c 'virsh list && echo 2278'
Id Name State
--------------------

2278
++ timeout -v --preserve-status 4s bash -c 'ls -l && echo 2278'
total 9200
rw------. 1 root root 22659 Apr 1 11:25 anaconda-ks.cfg
-rwxrwxrwx. 1 root root 10151 Apr 13 11:16 irqstat.py
drwxr-xr-x. 2 root root 4096 Apr 14 03:06 libvirt
rw-rr-. 1 root root 67144 Apr 1 20:13 memoryinfo
rw-rr-. 1 root root 26602 Apr 1 11:27 my-ks-post.log
rw-rr-. 1 root root 4 Apr 1 11:25 NETBOOT_METHOD.TXT
rw------. 1 root root 24198 Apr 1 11:27 original-ks.cfg
rw-r----. 1 root root 3327246 Apr 1 20:14 ovs-vswitchd.log
rw-rr-. 1 root root 331210 Apr 1 20:14 ovs-vswitchd.log.gz
rw-rr-. 1 root root 723364 Apr 1 20:13 ovs-vswitchd-maps
rw-rr-. 1 root root 632196 Apr 1 20:13 ovs-vswitchd-numa_maps
rw-rr-. 1 root root 2060356 Apr 1 20:13 qemu-maps
rw-rr-. 1 root root 2141430 Apr 1 20:13 qemu-numa_maps
rw-rr-. 1 root root 9 Apr 1 11:25 RECIPE.TXT
drwxr-xr-x. 2 root root 4096 Apr 13 23:47 rt-kernel
drwxr-xr-x. 2 root root 4096 Apr 13 23:56 stock-kernel
rw-rr-. 1 root root 150 Apr 14 03:16 test-juzhou.sh
2278
++ printf '\033]0;%s@%s:%s\007' root dell-per750-03 '~'

Actual results:
1. from step2, run test script with sh failed.

Expected results:
1. from step2, run test script should be successes.

Additional info:
[root@dell-per750-03 ~]# cat test-juzhou.sh
+ cat test-juzhou.sh
#!/bin/bash
set -x
timeout -v --preserve-status 4s virsh list

1. sh test-juzhou.sh
   + sh test-juzhou.sh
   + timeout -v --preserve-status 4s virsh list