[Miniflare] Clean up listener error handling - #15515
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Attach an error listener before listen in #startLoopbackServer so bind failures reject ready instead of becoming uncaught exceptions. Guard #stopLoopbackServer when the loopback server never started so dispose still settles after a startup failure. Fixes cloudflare#15466
Clear #loopbackServer and #loopbackHost after a successful stop so a failed bind during setOptions does not leave a stopped server cached. Add regression test for recovery after an unbindable host update.
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@cloudflare/autoconfig
@cloudflare/build-output-utils
@cloudflare/codemods
@cloudflare/config
create-cloudflare
@cloudflare/deploy-helpers
@cloudflare/kv-asset-handler
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@cloudflare/pages-functions
@cloudflare/pages-shared
@cloudflare/unenv-preset
@cloudflare/vite-plugin
@cloudflare/vitest-plugin
@cloudflare/workers-auth
@cloudflare/workers-editor-shared
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Fixes #15487.
Removes startup-only error handlers after successful loopback and inspector binds. Servers are now closed after bind failures while preserving the original error.
The inspector WebSocket server is initialized after the listener is ready so it cannot intercept startup errors.
Depends on #15485.
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