emit screenshot-on-failure in v8

[Bhargavi-BS]

…binary flow (SDK-6277)

In the v8 CLI/binary flow (BrowserstackCLI.isRunning()===true) the browser command/result listeners that capture a screenshot WebDriver command result were registered only in the !isRunning() branch, so a user's saveScreenshot()/ takeScreenshot() on failure was captured on the device but never forwarded to Test Observability (no TEST_SCREENSHOT event). v7 has no binary, so the listeners register and screenshots upload — hence works v7, broken v8.

Fix:

• service.ts: register the command/result listeners in the CLI branch too.
• insights-handler.ts: in CLI mode forward the screenshot to the binary over gRPC as a TEST_SCREENSHOT log via trackEvent(LOG) (the worker's direct-HTTP upload is not authorized in the v8 central-auth flow); skip the direct per-command HTTP log in CLI mode.
• wdioMochaTestFramework.ts: honor the incoming logEntry.kind (default TEST_LOG) so the screenshot keeps kind TEST_SCREENSHOT.

Verified end-to-end against a v8 repro: cloud accepted the screenshot upload (server={"success":true}).

Proposed changes

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

• 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

[xxshubhamxx]

Please run a quick sanity test on TRA and confirm that screenshots are being uploaded and received correctly from our side.