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[Machines] Can not edit "Maximum allocation" by dragging the slider

Version-Release number of selected components (if applicable):
cockpit-machines-294-1.el9.noarch
cockpit-296-1.el9.x86_64
libvirt-dbus-1.4.1-5.el9.x86_6
libvirt-client-9.3.0-2.el9.x86_64

How reproducible:
100%

Steps to Reproduce:
1. Prepare a shutoff vm.

2. Click "edit" after memory, change the "Maximum allocation" by draging the slider
The Maxmium value does not change and no changes after save too.

3. Input a larger value by edit the "Maximum allocation" value directly, save.
Re-open edit, click the slider, the  "Maximum allocation" value will change to default value again.



Actual results:
See step 2 & step 3.



Expected results:
The Maxmium value of Memory should change by dragging slider and take effect after save.

And clicking slider won't change the value to default value.



Additional info:

https://github.com/cockpit-project/cockpit-machines/pull/1159

Verified with packages:
cockpit-machines-295-1.el9.noarch
cockpit-296-1.el9.x86_64
libvirt-dbus-1.4.1-5.el9.x86_64
libvirt-client-9.3.0-2.el9.x86_64

Steps:
1. Prepare a shutoff vm.

2. Click "edit" after memory, change the "Maximum allocation" by draging the slider
The Maxmium value can change and  changes take effect after save .

3. Input a larger value by edit the "Maximum allocation" value directly, save.
Re-open edit, click the slider, the  "Maximum allocation" value does not change to default value again.

So verified.

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory (cockpit-machines bug fix and enhancement update), and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHBA-2023:6336