Shell dialog shadows are clipped on the top and left edges

Screenshot

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The fixes required are listed in

https://gitlab.gnome.org/GNOME/gnome-shell/-/issues/1090#note_948171

They are all in GNOME 40. I don't imagine we will need to patch them sooner than that.

This bug was fixed in the package mutter - 40.2.1-1ubuntu1

---------------
mutter (40.2.1-1ubuntu1) impish; urgency=medium

  * Merge with debian, containing new upstream version
  * Remaining changes with debian:
    - debian/gbp.conf: update upstream branch to point to ubuntu/master
    - debian/patches/x11-Add-support-for-fractional-scaling-using-Randr.patch:
      + X11: Add support for fractional scaling using Randr

mutter (40.2.1-1) experimental; urgency=medium

  * New upstream release
  * debian/patches: Refresh

mutter (40.2-1ubuntu1) impish; urgency=medium

  * Merge with debian, containing new upstream version
  * Remaining changes with debian:
    - debian/gbp.conf: update upstream branch to point to ubuntu/master
    - debian/patches/x11-Add-support-for-fractional-scaling-using-Randr.patch:
      + X11: Add support for fractional scaling using Randr

mutter (40.2-1) experimental; urgency=medium

  * New upstream release:
    - Fix mouse position in remote desktop with fractional scaling
    - Fix fd leak
    - Disable KMS modifiers on radeon driver
    - Fix adding virtual monitor to physical session
    - Unbreak press-drag-release to pop up and select right click menus
    - Fix VKMS detection
  * debian/patches: Refresh, dropping applied upstream
  * d/p: Mark view-verification tests as incomplete in big-endian archs.
    Saved pixmaps are invalid in big-endian architectures, so let's disable
    the tests for now, checking only the basic metadata but not comparing
    the contents.

mutter (40.1-1ubuntu1) impish; urgency=medium

  * Merge with debian, containing new upstream version:
    - Wayland input thread support (LP: #1690719)
  * debian/patches: Refresh as per upstream changes
  * Remaining changes with debian:
    - debian/gbp.conf: update upstream branch to point to ubuntu/master
    - debian/patches/x11-Add-support-for-fractional-scaling-using-Randr.patch:
      + X11: Add support for fractional scaling using Randr

mutter (40.1-1) experimental; urgency=medium

  [ Marco Trevisan (Treviño) ]
  * New upstream release:
    - Only snap to window edges when CTRL is pressed (LP: #1727225)
    - Fix viewport of offscreen effects (LP: #1825126)
  * debian: Update library name to follow soname (mutter-8)
  * debian/control: Bump dependencies to match upstream requirements
  * debian/patches:
    - Refresh
    - Do not run screencast tests.
      They require to have a full running pipewire (that requires a system
      dbus daemon) so, we can't easily get one up and running while building.
  * debian/libmutter-8-0.symbols: Sync with new library symbols
  * debian/control: Do not break on old gnome-shell versions
  * debian: Enable sysprof profiler on linux
  * debian/libmutter-8-0.symbols: Add new cogl trace symbols
  * debian/rules: Enforce symbols checking via higher gen symbols check level
  * debian/patches: Fix failing installed tests and ensure they work with runner
  * debian: Enable installed tests and package them in mutter-8-tests
  * debian/tests: Run installed tests as part of the autopkg tests
  * debian/control: Add dependency on xwayland to mutter-tests
  * debian/tests: Use multiple stanzas to run the auto...