Bugzilla

This works on linux, but fails on both my macOS machines (Intel and Apple Silicon) with:
```
Traceback (most recent call last):
  File "/Users/mfroman/mozilla/moz-central/python/mozbuild/mozbuild/gn_processor.py", line 776, in <module>
    main()
  File "/Users/mfroman/mozilla/moz-central/python/mozbuild/mozbuild/gn_processor.py", line 765, in main
    write_mozbuild(
  File "/Users/mfroman/mozilla/moz-central/python/mozbuild/mozbuild/gn_processor.py", line 600, in write_mozbuild
    mb.write_attrs(common_attrs)
  File "/Users/mfroman/mozilla/moz-central/python/mozbuild/mozbuild/gn_processor.py", line 81, in write_attrs
    self.write_mozbuild_dict(k, v)
  File "/Users/mfroman/mozilla/moz-central/python/mozbuild/mozbuild/gn_processor.py", line 122, in write_mozbuild_dict
    for o in value["outputs"]:
KeyError: 'outputs'
```
I reverted the changes from Bug 1818170 and it doesn't fail (of course, it removes all the changes from the moz.build files that Bug 1818170 added).

This works on linux, but fails on both my macOS machines (Intel and Apple Silicon running 12.6.3 Monterey) with:
```
Traceback (most recent call last):
  File "/Users/mfroman/mozilla/moz-central/python/mozbuild/mozbuild/gn_processor.py", line 776, in <module>
    main()
  File "/Users/mfroman/mozilla/moz-central/python/mozbuild/mozbuild/gn_processor.py", line 765, in main
    write_mozbuild(
  File "/Users/mfroman/mozilla/moz-central/python/mozbuild/mozbuild/gn_processor.py", line 600, in write_mozbuild
    mb.write_attrs(common_attrs)
  File "/Users/mfroman/mozilla/moz-central/python/mozbuild/mozbuild/gn_processor.py", line 81, in write_attrs
    self.write_mozbuild_dict(k, v)
  File "/Users/mfroman/mozilla/moz-central/python/mozbuild/mozbuild/gn_processor.py", line 122, in write_mozbuild_dict
    for o in value["outputs"]:
KeyError: 'outputs'
```
I reverted the changes from Bug 1818170 and it doesn't fail (of course, it removes all the changes from the moz.build files that Bug 1818170 added).