Proposed changes

In #11441 we moved the location for WebdriverIOs testrunner defaults into the @wdio/cli package. This has caused regressions since users have relied on accessing testrunner options through browser.options. However since they got stripped out through the validateConfig method they weren't available anymore

This patch makes sure that all options people put in their wdio.conf.js are propagated to the browser object.

Types of changes

• Bugfix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation update

Checklist

• I have read the CONTRIBUTING doc
• I have added tests that prove my fix is effective or that my feature works
• I have added necessary documentation (if appropriate)
• I have added proper type definitions for new commands (if appropriate)

Further comments

fixes #11578

Reviewers: @webdriverio/project-committers