A Move-tool click on the pasteboard with Auto-Select only cleared the layer
selection (#4991) when nothing was hit there, but `layers_hit` was not clipped
to the canvas: fill layers and pixels hanging past the edge were hit on the
pasteboard, so the click selected a layer that isn't drawn there instead.
Outside the canvas of a document without artboards, nothing is hit now, and
the layer marquee is clipped to the canvas the same way. Artboard documents
keep picking over the pasteboard, where they draw their layers (#5712).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
RickiNanoandClaude Opus 5.5
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