Similar to how you can get properties from nonexistent cast members,
Director will allow you to set them. This list was done by manually
checking in Director 4 which was a no-op instead of an exception.

Fixes Psych.

_mainHandle is a pointer to the projector archive, and is set once at
the start of execution. DirectorEngine is a better place for it rather
than the first Window, as other Windows might try and access it.

Fixes crash when changing the cursor in Microphone Fiend.

Fixes crash in Microphone Fiend.

Handlers inside scoped script types (e.g. CastScript) should not be
discoverable via getHandler.

Fixes menu screen in Derrat Sorcerum.

Thanks to Tim Reimer for the tipoff.

Fixes director-tests/D4-unit/T_EVNT19.DIR

Replacing a cast member with a Picture will reset the _initialRect to
a generic one positioned at (0, 0).
Before we do that, untransform the registration offset
so that it remains relative to the image coordinates.

Fixes graphics in Dungeon Street.

Fixes inventory list dimensions in Derrat Sorcerum.

Fixes restoring save games in Derrat Sorcerum.

Fixes the dialogue entry box in Cosmology of Kyoto.

Fixes director-tests/D4-unit/T_LING03.DIR

A few places in the code fetch the palette from the window manager. This
is not the source of truth; the WM might have a gamma-converted palette.

Fixes incorrect video colouring in the Mac version of Wrath of the Gods.