[compiler:babel] Don't read config files when not running as part of

user's pipeline

When the user app has a babel.config file that is missing the compiler,
strange things happen as babel does some strange merging of options from
the user's config and in various callsites like in our eslint rule and
healthcheck script. To minimize odd behavior, we default to not reading
the user's babel.config

Fixes #29135

ghstack-source-id: 92b193508e7ce2951e487757b3bcad0a273f9e26
Pull Request resolved: #29211

compiler/packages/babel-plugin-react-compiler/src/Babel/RunReactCompilerBabelPlugin.ts

@@ -36,6 +36,7 @@ export function runBabelPluginReactCompiler(
       "babel-plugin-fbt-runtime",
     ],
     sourceType: "module",
+    configFile: false,
   });
   invariant(
     result?.code != null,

scripts/jest/preprocessor.js

@@ -109,7 +109,10 @@ module.exports = {
           sourceAst,
           src,
           Object.assign(
-            {filename: path.relative(process.cwd(), filePath)},
+            {
+              filename: path.relative(process.cwd(), filePath),
+              configFile: false,
+            },
             babelOptions,
             {
               plugins,