refactor: extract hovered block target helper

rust/spikes/leptos-tiptap-spike/src/editor_runtime/block_dnd.rs

@@ -129,6 +129,16 @@ pub(crate) fn drop_indicator_from_block_rects(
     )
 }
 
+pub(crate) fn hovered_block_from_target(
+    target: EventTarget,
+    root: &Element,
+    handle_selector: &str,
+) -> Option<HoveredBlockState> {
+    let element = crate::editor_runtime::dom_events::target_element(target)?;
+    let index = direct_block_index_from_element(&element, root, handle_selector)?;
+    block_state_from_index(index)
+}
+
 pub(crate) fn block_state_from_index(index: usize) -> Option<HoveredBlockState> {
     let root = editor_root_element()?;
     let stage = editor_stage_element()?;