Improve lsp notifications (#10220)

1. They now will not go off-screen
2. You can scroll long messages.
3. Only one notification per language server is shown at a time
4. The title/text are now distinguished visually
5. You can copy the error message to the clipboard

Fixes: #10217
Fixes: #10190
Fixes: #10090

Release Notes:

- Fixed language server notifications being too large
([#10090](https://github.com/zed-industries/zed/issues/10090)).

crates/workspace/src/workspace.rs

@@ -638,7 +638,7 @@ impl Workspace {
 
                 project::Event::LanguageServerPrompt(request) => {
                     let mut hasher = DefaultHasher::new();
-                    request.message.as_str().hash(&mut hasher);
+                    request.lsp_name.as_str().hash(&mut hasher);
                     let id = hasher.finish();
 
                     this.show_notification(id as usize, cx, |cx| {