revert single channel click (#7738)

- Revert "collab tweaks (#7706)"
- Revert "2112 (#7640)"
- Revert "single click channel (#7596)"
- Reserve protobufs
- Don't revert migrations

Release Notes:

- N/A

**or**

- N/A

crates/call/src/call_settings.rs

@@ -7,6 +7,7 @@ use settings::Settings;
 #[derive(Deserialize, Debug)]
 pub struct CallSettings {
     pub mute_on_join: bool,
+    pub share_on_join: bool,
 }
 
 /// Configuration of voice calls in Zed.
@@ -16,6 +17,11 @@ pub struct CallSettingsContent {
     ///
     /// Default: false
     pub mute_on_join: Option<bool>,
+
+    /// Whether your current project should be shared when joining an empty channel.
+    ///
+    /// Default: true
+    pub share_on_join: Option<bool>,
 }
 
 impl Settings for CallSettings {