POC for pre-fetching descriptors for select optimization.

PiperOrigin-RevId: 840485419

Author: jnthntatum

extensions/BUILD

@@ -314,7 +314,6 @@ cc_library(
         "//base:builtins",
         "//common:ast",
         "//common:ast_rewrite",
-        "//common:casting",
         "//common:constant",
         "//common:expr",
         "//common:function_descriptor",
@@ -332,6 +331,7 @@ cc_library(
         "//internal:number",
         "//internal:status_macros",
         "//runtime:runtime_builder",
+        "//runtime:runtime_options",
         "//runtime/internal:errors",
         "//runtime/internal:runtime_friend_access",
         "//runtime/internal:runtime_impl",