test(mouse): disable click steps test on headed

[agg23]

The click move steps change (#38036) introduced a test that is flaky when headed. This is nearly identical to the existing Mouse.move test, so it's likely a timing issue. Disable the test when headed for now.

[github-actions]

Test results for "MCP"

1 failed
❌ [chrome] › mcp/files.spec.ts:103 › clicking on download link emits download @mcp-windows-latest

2 flaky

⚠️ [chrome] › mcp/cdp.spec.ts:24 › cdp server `@mcp-windows-latest`
⚠️ [chrome] › mcp/cdp.spec.ts:35 › cdp server reuse tab `@mcp-windows-latest`

2585 passed, 116 skipped

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Merge workflow run.

[github-actions]

Test results for "tests 1"

4 flaky

⚠️ [firefox-library] › library/inspector/cli-codegen-1.spec.ts:1079 › cli codegen › should not throw csp directive violation errors `@firefox-ubuntu-22.04-node18`
⚠️ [firefox-page] › page/page-emulate-media.spec.ts:144 › should keep reduced motion and color emulation after reload `@firefox-ubuntu-22.04-node18`
⚠️ [playwright-test] › ui-mode-trace.spec.ts:719 › should partition action tree state by test `@macos-latest-node18-2`
⚠️ [chromium] › headerView.spec.tsx:49 › should toggle filters `@web-components-html-reporter`

40318 passed, 789 skipped

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Merge workflow run.