Generated BUILD files have `ug+x` bit set. Intentional? If so, why?

The generated BUILD files `config/BUILD` and `java/BUILD` are executable. Same with the `LICENCE` file. Is this intentional?

```console
$ tree -p my_config/
[drwxr-x---] my_config/
├── [drwxr-x---] cc
│   ├── [-rw-r-----] armeabi_cc_toolchain_config.bzl
│   ├── [-rw-r-----] BUILD
│   ├── [-rw-r-----] builtin_include_directory_paths
│   ├── [-rw-r-----] cc_toolchain_config.bzl
│   ├── [-rw-r-----] cc_wrapper.sh
│   ├── [-rw-r-----] module.modulemap
│   ├── [-rw-r-----] REPO.bazel
│   ├── [drwxr-x---] tools
│   │   └── [drwxr-x---] cpp
│   │   └── [-rw-r-----] empty.cc
│   └── [-rw-r-----] WORKSPACE
├── [drwxr-x---] config
│   └── [-rwxr-x---] BUILD
├── [drwxr-x---] java
│   └── [-rwxr-x---] BUILD
└── [-rwxr-x---] LICENSE
```

Start by inspecting the generated config/BUILD and java/BUILD files and compare their permissions with the other generated files shown in the report. Trace how these files and LICENSE are produced, then determine whether the executable bits are intentional; done means the behavior is corrected or documented with a clear rationale.

Written by the indexing model from the issue text.