disable the //:generate-code target in Bazel (pytorch#76174)

Summary:
Pull Request resolved: pytorch#76174

This is about to conflict with the existing Bazel codegen
outputs. Switch to it atomically.
ghstack-source-id: 155029309

Test Plan: Verify manually and rely on CI.

Reviewed By: dreiss

Differential Revision: D35815288

fbshipit-source-id: 8b35e7baeb8572aef13c07cac689ee84dc7335d5
(cherry picked from commit 6dde983)

build.bzl

@@ -42,6 +42,12 @@ def define_targets(rules):
               "--native-functions-path $(location :native_functions.yaml) " +
               "--tags-path=$(location :tags.yaml) " +
               "--gen_lazy_ts_backend",
+        tags = [
+            # Filter this target out for Bazel until we are ready to
+            # use it. When we refactor this for fbcode it will start
+            # to conflict with the Bazel code generator.
+            "-bazel",
+        ],
     )
 
     rules.genrule(