Add telemetry::event! (#22146)

CC @JosephTLyons

Release Notes:

- N/A

crates/extension_host/src/extension_host.rs

@@ -1001,14 +1001,13 @@ impl ExtensionStore {
             extensions_to_unload.len() - reload_count
         );
 
-        if let Some(telemetry) = &self.telemetry {
-            for extension_id in &extensions_to_load {
-                if let Some(extension) = new_index.extensions.get(extension_id) {
-                    telemetry.report_extension_event(
-                        extension_id.clone(),
-                        extension.manifest.version.clone(),
-                    );
-                }
+        for extension_id in &extensions_to_load {
+            if let Some(extension) = new_index.extensions.get(extension_id) {
+                telemetry::event!(
+                    "Extension Loaded",
+                    extension_id,
+                    version = extension.manifest.version
+                );
             }
         }