Dedupe Capabilities

[EdmundasD]

Proposed changes

This is an addition to #12430.

capabilities are also being duped when initializing WDIO via Launcher. Appears the dev decided not to include this change. More context here: #12430 (comment)

Types of changes

• Polish (an improvement for an existing feature)
• 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 (improvements to the project's docs)
• Specification changes (updates to WebDriver command specifications)
• Internal updates (everything related to internal scripts, governance documentation and CI files)

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 the necessary documentation (if appropriate)
• I have added proper type definitions for new commands (if appropriate)

Backport Request

//: # (The current main branch is the development branch for WebdriverIO v9. If your change should be released to the current major version of WebdriverIO (v8), please raise another PR with the same changes against the v8 branch.)

• This change is solely for v9 and doesn't need to be back-ported
• Back-ported PR at #XXXXX

Further comments

Reviewers: @webdriverio/project-committers

[linux-foundation-easycla]

• ❌ - login: @EdmundasD / name: Edmundas Daunoras . The commit (7ff4d95) is not authorized under a signed CLA. Please click here to be authorized. For further assistance with EasyCLA, please submit a support request ticket.

[christian-bromann]

Thanks so much for raising the PR 👏 Some requests:

• mind signing the CLA? Let me know if you have any questions
• mind enhancing the unit test in packages/wdio-config/tests/node/configparser.test.ts?
• mind raising the same PR for v8 so we can release it to the latest version?