test(desktop): reproduce #12689 topology polling blocking on sendSync

These tests reproduce #12689: every topology poll calls the
sendSync-backed bridge reads for bootstraps and local-environment
enabled, so a busy main process freezes the renderer while typing.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
2669a8beb0Julius Marminge committed on 10/22/2026, 11:57:32 AMparent8d3b061
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