message: build: fix BUILD.bazel specification by excluding all backwards compat code
  we have no target setup for this, we should set it up or be ok with not having backwards compat
  story for external bazel users. I'll leave it up to and to decide and
  potentially fix in a followup PR.
diff: @@ -7,7 +7,8 @@ load("@build_bazel_rules_typescript//:defs.bzl", "ts_library")
  ts_library(
  name = "rxjs",
  module_name = "rxjs",
  - srcs = glob(["*.ts", "**/*.ts"]),
  + # exclude all backwards compatibility code because we don't have a bazel target setup for that
  + srcs = glob(["*.ts", "**/*.ts"], exclude = ["internal/Rx.ts", "internal-compatibility/**", "internal/patching/**", "umd.ts"]),
  tsconfig = "tsconfig.json",
  # Specify the compile-time dependencies to run the compilation (eg. typescript)
  # The default value assumes that the end-user has a target //:node_modules
  