chore(electron): npm deprecate @wdio/electron-cdp-bridge after 10.2.0 ships

Follow-up to #340 / #481 — @wdio/electron-service now consumes the shared @wdio/native-cdp-bridge, and @wdio/electron-cdp-bridge has been deleted from the monorepo.

Once @wdio/electron-service@10.2.0 is published stable (after the -next line), deprecate the retired package on npm so existing installs are pointed at the replacement:

npm deprecate @wdio/electron-cdp-bridge "Merged into @wdio/native-cdp-bridge; install @wdio/electron-service@>=10.2.0 (the CDP transport is now an internal implementation detail)."

Notes

• Manual maintainer step — it can't run through the releasekit standing-PR flow, since the package no longer exists in the workspace.
• Gate on the stable 10.2.0 release, not the prerelease, so -next testers aren't stranded.
• Already-published versions (last was @wdio/electron-cdp-bridge@10.1.0) stay on npm; this only adds the deprecation notice.

No repository file or test is named because this is a manual npm release step. First verify that @wdio/electron-service@10.2.0 is stable rather than a -next release, then deprecate @wdio/electron-cdp-bridge; it is done when npm shows the deprecation notice pointing users to the replacement.