Switch to using weak transactions for queries happening on connection (#32411)

Release Notes:

- N/A

Co-authored-by: Conrad <conrad@zed.dev>

crates/collab/src/db/queries/channels.rs

@@ -501,8 +501,10 @@ impl Database {
 
     /// Returns all channels for the user with the given ID.
     pub async fn get_channels_for_user(&self, user_id: UserId) -> Result<ChannelsForUser> {
-        self.transaction(|tx| async move { self.get_user_channels(user_id, None, true, &tx).await })
-            .await
+        self.weak_transaction(
+            |tx| async move { self.get_user_channels(user_id, None, true, &tx).await },
+        )
+        .await
     }
 
     /// Returns all channels for the user with the given ID that are descendants

crates/collab/src/db/queries/contacts.rs

@@ -15,7 +15,7 @@ impl Database {
             user_b_busy: bool,
         }
 
-        self.transaction(|tx| async move {
+        self.weak_transaction(|tx| async move {
             let user_a_participant = Alias::new("user_a_participant");
             let user_b_participant = Alias::new("user_b_participant");
             let mut db_contacts = contact::Entity::find()
@@ -91,7 +91,7 @@ impl Database {
 
     /// Returns whether the given user is a busy (on a call).
     pub async fn is_user_busy(&self, user_id: UserId) -> Result<bool> {
-        self.transaction(|tx| async move {
+        self.weak_transaction(|tx| async move {
             let participant = room_participant::Entity::find()
                 .filter(room_participant::Column::UserId.eq(user_id))
                 .one(&*tx)

crates/collab/src/db/queries/rooms.rs

@@ -80,7 +80,7 @@ impl Database {
         &self,
         user_id: UserId,
     ) -> Result<Option<proto::IncomingCall>> {
-        self.transaction(|tx| async move {
+        self.weak_transaction(|tx| async move {
             let pending_participant = room_participant::Entity::find()
                 .filter(
                     room_participant::Column::UserId