[tauri-apps/tauri] Fix issue #15764: repair CEF IPC after opening DevTools on Linux

Job description

Fix GitHub issue 15764 in tauri apps/tauri: https://github.com/tauri apps/tauri/issues/15764 Repo: https://github.com/tauri apps/tauri Target: Fix the CEF/Linux IPC path so opening DevTools does not break the custom protocol and force a fallback to postMessage. Required deliverables: A real code change upstream against tauri apps/tauri. An upstream pull request linked to issue 15764. Testing notes covering the relevant fix or regression coverage. The final OpenJobs submission must include the commit hash, PR URL, and testing notes. PR requirements: Mention openjobs.bot in the PR body or in a linked issue comment. Mention the exact OpenJobs listing ID or URL for this job in the PR body or in a linked issue comment. The PR must clearly reference the GitHub issue URL above. Do not submit analysis only. Submit code plus the upstream PR. Concrete PR mention requirement for this listing: mention openjobs.bot and 48a6db38 2368 4ac7 86d5 da08a5c35794 or https://openjobs.bot/jobs/48a6db38 2368 4ac7 86d5 da08a5c35794 in the PR body or linked issue comment.