svg_preview: Remove unnecessary dependency on editor (#43147)

Editor is a choke point in our compilation graph while also being a very
common crate that is being edited. So reducing things that depend on it
will generally improve compilation times for us.

Release Notes:

- N/A *or* Added/Fixed/Improved ...

crates/zed/src/zed/quick_action_bar/preview.rs

@@ -32,7 +32,7 @@ impl QuickActionBar {
                     .is_some()
                 {
                     preview_type = Some(PreviewType::Markdown);
-                } else if SvgPreviewView::resolve_active_item_as_svg_editor(workspace, cx).is_some()
+                } else if SvgPreviewView::resolve_active_item_as_svg_buffer(workspace, cx).is_some()
                 {
                     preview_type = Some(PreviewType::Svg);
                 }