Handle undefined state entries

[jelly]

The dynamiclistform only grows and removes entries by setting them to undefined which we need to account for. Previously this would map() and return [undefined, obj] but that raises an exception when you call Object.keys(undefined).

Fixes #1619

[jelly]

There are some things I want to fix in a follow up:

#1622 (comment)

[martinpitt]

Ah, I remember that pain in machines. Thanks!

fedora/rawhide is known broken (containers/podman#21896), but the others should work, retrying.

[jelly]

Ah, I remember that pain in machines. Thanks!

fedora/rawhide is known broken (containers/podman#21896), but the others should work, retrying.

There is some serious nonsense going on here, I had to add that podman inspect as waiting on the container to appear breaks the test because it opens the "Create container modal" too fast. This is very annoying imo, especially because waiting for a container to be "Running" requires doing an inspect with waitContainer

Killing browser (pid 665418)
Traceback (most recent call last):
  File "/home/jelle/projects/cockpit-podman/./test/check-application", line 2393, in testCreateContainerValidation
    b.click(f'#containers-images tbody tr:contains("{IMG_BUSYBOX}") .ct-container-create')
  File "/home/jelle/projects/cockpit-podman/test/common/testlib.py", line 412, in click
    self.mouse(selector + ":not([disabled]):not([aria-disabled=true])", "click", 0, 0, 0)
  File "/home/jelle/projects/cockpit-podman/test/common/testlib.py", line 405, in mouse
    self.call_js_func('ph_mouse', selector, event, x, y, btn, ctrlKey, shiftKey, altKey, metaKey)
  File "/home/jelle/projects/cockpit-podman/test/common/testlib.py", line 358, in call_js_func
    return self.eval_js("%s(%s)" % (func, ','.join(map(jsquote, args))))
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/jelle/projects/cockpit-podman/test/common/testlib.py", line 336, in eval_js
    result = self.cdp.invoke("Runtime.evaluate", expression=code, trace=code,
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/jelle/projects/cockpit-podman/test/common/cdp.py", line 204, in invoke
    res = self.command(cmd)
          ^^^^^^^^^^^^^^^^^
  File "/home/jelle/projects/cockpit-podman/test/common/cdp.py", line 231, in command
    raise RuntimeError(res["error"])
RuntimeError: TypeError: Converting circular structure to JSON