workspace: Do not prompt for hanging up current call when replacing last visible project (#36697)

This fixes a bug where in order to open a new project in a call (even if
it's not shared), you need to hang up.


Release Notes:

- N/A

crates/workspace/src/workspace.rs

@@ -2249,10 +2249,10 @@ impl Workspace {
             })?;
 
             if let Some(active_call) = active_call
-                && close_intent != CloseIntent::Quit
                 && workspace_count == 1
                 && active_call.read_with(cx, |call, _| call.room().is_some())?
             {
+                if close_intent == CloseIntent::CloseWindow {
                     let answer = cx.update(|window, cx| {
                         window.prompt(
                             PromptLevel::Warning,
@@ -2272,6 +2272,22 @@ impl Workspace {
                             .log_err();
                     }
                 }
+                if close_intent == CloseIntent::ReplaceWindow {
+                    _ = active_call.update(cx, |this, cx| {
+                        let workspace = cx
+                            .windows()
+                            .iter()
+                            .filter_map(|window| window.downcast::<Workspace>())
+                            .next()
+                            .unwrap();
+                        let project = workspace.read(cx)?.project.clone();
+                        if project.read(cx).is_shared() {
+                            this.unshare_project(project, cx)?;
+                        }
+                        Ok::<_, anyhow::Error>(())
+                    })?;
+                }
+            }
 
             let save_result = this
                 .update_in(cx, |this, window, cx| {