Fixed unhandled empty feature files

[abhimanyupandian]

Motivation/Description of the PR

When a Feature file is empty, instead of showing an error that the Feature file is empty, the below error is displayed.
This is irrelevant to the actual problem and as a result users will not understand what the problem is, thereby costing a lot of time for resolution.

TypeError: Cannot read property 'name' of undefined
at module.exports (/Users/node_modules/codeceptjs/lib/interfaces/gherkin.js:18:39)
at /Users/node_modules/codeceptjs/lib/mochaFactory.js:38:32
at Array.map ()
at Mocha.mocha.loadFiles (/Users/node_modules/codeceptjs/lib/mochaFactory.js:36:21)
at Mocha.run (/Users/node_modules/codeceptjs/node_modules/mocha/lib/mocha.js:966:10)
at /Users/node_modules/codeceptjs/lib/codecept.js:188:15
at new Promise ()
at Codecept.run (/Users/node_modules/codeceptjs/lib/codecept.js:171:12)
at Function.run (/Users/lib/utils/runner.util.ts:27:18)
at main (/Users/lib/runner.ts:6:10)

Applicable helpers: Applies to all helpers

• WebDriver
• Puppeteer
• Nightmare
• REST
• FileHelper
• Appium
• Protractor
• TestCafe
• Playwright

Applicable plugins:

• allure
• autoDelay
• autoLogin
• customLocator
• pauseOnFail
• coverage
• retryFailedStep
• screenshotOnFail
• selenoid
• stepByStepReport
• wdio
• subtitles

Type of change

• 🔥 Breaking changes
• 🚀 New functionality
• 🐛 Bug fix
• 📋 Documentation changes/updates
• ♨️ Hot fix
• 🔨 Markdown files fix - not related to source code
• 💅 Polish code

Checklist:

• Tests have been added
• Documentation has been added (Run npm run docs)
• Lint checking (Run npm run lint)
• Local tests are passed (Run npm test)

[abhimanyupandian]

@DavertMik Could you please review and merge this?

[Arhell]

cc @DavertMik

[DavertMik]

Thanks! Done