Fix tsc:build on linux machines (#3588)

Summary:
Pull Request resolved: https://github.com/facebook/flipper/pull/3588

Fix failing CI builds on Linux

See screenshot, sometimes the script being executed by ts-node, ends up as argument to the script itself. This seems to happen in CI, and *sometimes* happens for me locally. Since compute-package-checksum doesn't read any varargs anyway, just disabled the `strict` flag to ignore the additional arguments. This fixes our GH builds failing on linux.

Reviewed By: aigoncharov

Differential Revision: D35210590

fbshipit-source-id: 91057fd657a888020ea333495d1f16b7ff9cca50

desktop/scripts/compute-package-checksum.tsx

@@ -30,7 +30,6 @@ const argv = yargs
     },
   })
   .help()
-  .strict()
   .parse(process.argv.slice(1));
 
 computePackageChecksum(argv.dir, argv.out)