Update on "[Executorch] Add quantized kv cache to oss ci"

Fixes to make sure quantized kv cache works in oss

Differential Revision: [D66269487](https://our.internmc.facebook.com/intern/diff/D66269487/)

[ghstack-poisoned]

Author: kimishpatel

extension/llm/custom_ops/targets.bzl

@@ -81,7 +81,7 @@ def define_common_targets():
     runtime.python_library(
         name = "custom_ops_aot_py",
         srcs = [
-            "sdpa_with_kv_cache.py",
+            "custom_ops.py",
         ],
         visibility = [
             "//executorch/...",