Revise eject after uptade to @bem/sdk.config

[awinogradov]

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view/node_modules/@bem/sdk.config/index.js:412
        config.levels && config.levels.forEach(level => {
                                       ^

TypeError: config.levels.forEach is not a function
    at configs.forEach.config (/Users/grape/Sources/bem-react-electron-boilerplate/src/view/node_modules/@bem/sdk.config/index.js:412:40)
    at Array.forEach (<anonymous>)
    at extendConfigsPathByLayer (/Users/grape/Sources/bem-react-electron-boilerplate/src/view/node_modules/@bem/sdk.config/index.js:411:13)
    at BemConfig.configs (/Users/grape/Sources/bem-react-electron-boilerplate/src/view/node_modules/@bem/sdk.config/index.js:55:23)
    at BemConfig.getSync (/Users/grape/Sources/bem-react-electron-boilerplate/src/view/node_modules/@bem/sdk.config/index.js:258:23)
    at BemConfig.moduleSync (/Users/grape/Sources/bem-react-electron-boilerplate/src/view/node_modules/@bem/sdk.config/index.js:361:24)
    at Object.<anonymous> (/Users/grape/Sources/bem-react-electron-boilerplate/src/view/node_modules/bem-react-scripts/config/paths.js:17:31)
    at Module._compile (module.js:573:30)
    at Object.Module._extensions..js (module.js:584:10)
    at Module.load (module.js:507:32)
error Command failed with exit code 1.