Add a schema to extensions, to prevent installing extensions on too old of a Zed version (#9599)

Release Notes:

- N/A

---------

Co-authored-by: Marshall <marshall@zed.dev>

crates/client/src/telemetry.rs

@@ -470,7 +470,11 @@ impl Telemetry {
 
                     let request = http::Request::builder()
                         .method(Method::POST)
-                        .uri(this.http_client.build_zed_api_url("/telemetry/events"))
+                        .uri(
+                            this.http_client
+                                .build_zed_api_url("/telemetry/events", &[])?
+                                .as_ref(),
+                        )
                         .header("Content-Type", "text/plain")
                         .header("x-zed-checksum", checksum)
                         .body(json_bytes.into());