set Main Toolbar Insets
Sets the window insets the main toolbar reserves for its content (default ToolbarInsets.StatusBars). Pass ToolbarInsets.None when the toolbar is hosted away from the top edge of the window — e.g. an embedded com.pspdfkit.ui.PdfFragment below other chrome — so it does not add a spurious status-bar inset on top of the host's own spacing.
This is the host-agnostic control: it works for the SDK-mounted toolbar in PdfActivity / PdfUiFragment as well as the Compose-only path. For the Compose-only path the same control is also available directly as the windowInsets parameter of com.pspdfkit.compose.toolbar.composables.NutrientMainToolbar, which overrides this when set.