chore(agent): make sure events are dispatched and dispose is respected

[dgozman]

No description provided.

[github-actions]

Test results for "tests 1"

3 failed
❌ [playwright-test] › expect-poll.spec.ts:162 › should support .not predicate @macos-latest-node20
❌ [playwright-test] › loader.spec.ts:757 › should resolve .js import to .tsx file in non-ESM mode for components @macos-latest-node20
❌ [playwright-test] › playwright.artifacts.spec.ts:367 › should work with trace: on-all-retries @macos-latest-node20

5 flaky

⚠️ [chromium-library] › library/popup.spec.ts:258 › should not throw when click closes popup `@ubuntu-22.04-chromium-tip-of-tree`
⚠️ [chromium-library] › library/inspector/recorder-api.spec.ts:120 › should type `@chromium-ubuntu-22.04-node22`
⚠️ [firefox-library] › library/inspector/cli-codegen-1.spec.ts:1082 › cli codegen › should not throw csp directive violation errors `@firefox-ubuntu-22.04-node20`
⚠️ [firefox-library] › library/tracing.spec.ts:264 › should not include trace resources from the previous chunks `@firefox-ubuntu-22.04-node20`
⚠️ [playwright-test] › ui-mode-trace.spec.ts:379 › should reveal errors in the sourcetab `@macos-latest-node20`

34684 passed, 691 skipped

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Merge workflow run.

[github-actions]

Test results for "MCP"

1 failed
❌ [chrome] › mcp/test-debug.spec.ts:167 › test_debug (pause/snapshot/resume) @mcp-ubuntu-latest

2818 passed, 106 skipped

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Merge workflow run.