deps: Bump smol to 2.0 (#22956)

The collateral of this is that code size is increased by ~300kB, but I
think we can stomach it.

Release Notes:

- N/A

crates/collab/src/tests/integration_tests.rs

@@ -4936,7 +4936,7 @@ async fn test_project_search(
 
     // Perform a search as the guest.
     let mut results = HashMap::default();
-    let mut search_rx = project_b.update(cx_b, |project, cx| {
+    let search_rx = project_b.update(cx_b, |project, cx| {
         project.search(
             SearchQuery::text(
                 "world",
@@ -4951,7 +4951,7 @@ async fn test_project_search(
             cx,
         )
     });
-    while let Some(result) = search_rx.next().await {
+    while let Ok(result) = search_rx.recv().await {
         match result {
             SearchResult::Buffer { buffer, ranges } => {
                 results.entry(buffer).or_insert(ranges);

crates/collab/src/tests/random_project_collaboration_tests.rs

@@ -6,7 +6,6 @@ use call::ActiveCall;
 use collections::{BTreeMap, HashMap};
 use editor::Bias;
 use fs::{FakeFs, Fs as _};
-use futures::StreamExt;
 use git::repository::GitFileStatus;
 use gpui::{BackgroundExecutor, Model, TestAppContext};
 use language::{
@@ -873,7 +872,7 @@ impl RandomizedTest for ProjectCollaborationTest {
                     if detach { "detaching" } else { "awaiting" }
                 );
 
-                let mut search = project.update(cx, |project, cx| {
+                let search = project.update(cx, |project, cx| {
                     project.search(
                         SearchQuery::text(
                             query,
@@ -891,7 +890,7 @@ impl RandomizedTest for ProjectCollaborationTest {
                 drop(project);
                 let search = cx.executor().spawn(async move {
                     let mut results = HashMap::default();
-                    while let Some(result) = search.next().await {
+                    while let Ok(result) = search.recv().await {
                         if let SearchResult::Buffer { buffer, ranges } = result {
                             results.entry(buffer).or_insert(ranges);
                         }