Enable clippy::too_many_arguments (#8734)

This PR enables the
[`clippy::too_many_arguments`](https://rust-lang.github.io/rust-clippy/master/index.html#/too_many_arguments)
rule.

I opted to add `#[allow(clippy::too_many_arguments)]` on the individual
violations, as reworking them to take fewer arguments is a more involved
task.

Release Notes:

- N/A

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

@@ -200,6 +200,7 @@ impl Database {
     }
 
     /// Creates a new channel message.
+    #[allow(clippy::too_many_arguments)]
     pub async fn create_channel_message(
         &self,
         channel_id: ChannelId,

crates/collab/src/rpc.rs

@@ -543,6 +543,7 @@ impl Server {
         })
     }
 
+    #[allow(clippy::too_many_arguments)]
     pub fn handle_connection(
         self: &Arc<Self>,
         connection: Connection,

crates/collab/src/tests/randomized_test_helpers.rs

@@ -464,6 +464,7 @@ impl<T: RandomizedTest> TestPlan<T> {
         })
     }
 
+    #[allow(clippy::too_many_arguments)]
     async fn apply_server_operation(
         plan: Arc<Mutex<Self>>,
         deterministic: BackgroundExecutor,