[XSG] SwipeItem.Invoked event handler not found

[StephaneDelcroix]

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Description

XSG fails to find the Invoked event handler on SwipeItem when specified in XAML.

Reproduction

<SwipeItem Text="Delete" Invoked="OnInvoked" />

Error:

error MAUIX2002: No accessible property, BindableProperty, or event found for 'OnInvoked', or mismatching type between value and property.

Note: The error message says "OnInvoked" (the handler name) instead of "Invoked" (the event name), which may be a bug in the error message itself.

Expected Behavior

XSG should recognize Invoked as an event on SwipeItem and wire up the event handler correctly.

Affected File

src/Controls/samples/Controls.Sample/Pages/Controls/SwipeViewGalleries/CustomSwipeControl.xaml

Workaround

Use Inflator="Runtime" for the affected XAML file.

Context

Discovered while testing XSG fixes for #33524.