chore: default to ubuntu 24.04 for unsupported distros

[yury-s]

Fixes #38259

[github-actions]

Test results for "MCP"

2432 passed, 116 skipped

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Merge workflow run.

[github-actions]

Test results for "tests 1"

4 flaky

⚠️ [chromium-library] › library/popup.spec.ts:258 › should not throw when click closes popup `@chromium-ubuntu-22.04-node18`
⚠️ [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-wait-for-function.spec.ts:104 › should work with strict CSP policy `@firefox-ubuntu-22.04-node18`
⚠️ [playwright-test] › ui-mode-test-output.spec.ts:117 › should collapse repeated console messages for test `@windows-latest-node18-2`

40317 passed, 787 skipped

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Merge workflow run.