Don't restart daemon on changes to buckconfig[project].ide_force_kill
Don't restart daemon on changes to buckconfig[project].ide_force_kill

Summary:
- In the docs, we explain that developers can use `--config project.ide_force_kill=<value>` instead of or to override the setting in `.buckconfig`.
- Add the `ide_force_kill` key to the whitelist so that the Buck daemon doesn't restart if developers make this config change from the command line.

Reviewed By: styurin

fbshipit-source-id: 33f3317824

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