repl: Refactor outputs for externalization (#16971)

Working on addressing large outputs, refactored as part of it.



https://github.com/user-attachments/assets/48ea576c-e13a-4d09-b45a-4baa41bf6f72



Release Notes:

- N/A

crates/repl/src/session.rs

@@ -60,7 +60,16 @@ impl EditorBlock {
         on_close: CloseBlockFn,
         cx: &mut ViewContext<Session>,
     ) -> anyhow::Result<Self> {
-        let execution_view = cx.new_view(|cx| ExecutionView::new(status, cx));
+        let editor = editor
+            .upgrade()
+            .ok_or_else(|| anyhow::anyhow!("editor is not open"))?;
+        let workspace = editor
+            .read(cx)
+            .workspace()
+            .ok_or_else(|| anyhow::anyhow!("workspace dropped"))?;
+
+        let execution_view =
+            cx.new_view(|cx| ExecutionView::new(status, workspace.downgrade(), cx));
 
         let (block_id, invalidation_anchor) = editor.update(cx, |editor, cx| {
             let buffer = editor.buffer().clone();
@@ -93,7 +102,7 @@ impl EditorBlock {
 
             let block_id = editor.insert_blocks([block], None, cx)[0];
             (block_id, invalidation_anchor)
-        })?;
+        });
 
         anyhow::Ok(Self {
             code_range,