feat: Revert broken finished SSE yield config

Author: stainless-app[bot]

.stats.yml

@@ -1,4 +1,4 @@
 configured_endpoints: 8
 openapi_spec_url: https://storage.googleapis.com/stainless-sdk-openapi-specs/browserbase%2Fstagehand-573d364768ac1902ee5ed8b2485d3b293bda0ea8ff7898aef1a3fd6be79b594a.yml
 openapi_spec_hash: 107ec840f4330885dd2232a05a66fed7
-config_hash: ab1c1122e862f9bdb6db4df36d489701
+config_hash: 0209737a4ab2a71afececb0ff7459998

src/SSEStream.php

@@ -29,7 +29,14 @@ private function parsedGenerator(): \Generator
             return;
         }
 
+        $done = false;
         foreach ($this->stream as $row) {
+            // @phpstan-ignore if.alwaysFalse
+            if ($done) {
+                // Iterate through the whole stream
+                continue;
+            }
+
             switch ($row['event'] ?? null) {
                 case null:
                     if ($data = $row['data'] ?? '') {
@@ -43,9 +50,7 @@ private function parsedGenerator(): \Generator
 
             if ($data = $row['data'] ?? '') {
                 if (str_starts_with($data, needle: '{"data":{"status":"finished"')) {
-                    $decoded = Util::decodeJson($data);
-
-                    yield Conversion::coerce($this->convert, value: $decoded);
+                    $done = true;
 
                     continue;
                 }