Make tests less noisy (#12463)

When running the tests for linux, I found a lot of benign errors getting
logged. This PR cuts down some of the noise from unnecessary workspace
serialization and SVG renders

Release Notes:

- N/A

crates/language_tools/src/syntax_tree_view.rs

@@ -407,7 +407,7 @@ impl Item for SyntaxTreeView {
 
     fn clone_on_split(
         &self,
-        _: workspace::WorkspaceId,
+        _: Option<workspace::WorkspaceId>,
         cx: &mut ViewContext<Self>,
     ) -> Option<View<Self>>
     where