test: use checkInstalledSoftwareOnDisk for itest

[mxschmitt]

This allows us to keep passing Arrays and we don't have to create Set's all the time.

This helps #34078.

[github-actions]

Test results for "tests 1"

7 flaky

⚠️ [firefox-page] › page/page-evaluate.spec.ts:403:3 › should throw for too deep reference chain @firefox-ubuntu-22.04-node18
⚠️ [playwright-test] › ui-mode-test-update.spec.ts:83:5 › should pick new / deleted tests @ubuntu-latest-node20-1
⚠️ [playwright-test] › ui-mode-trace.spec.ts:343:5 › should work behind reverse proxy @ubuntu-latest-node22-1
⚠️ [webkit-library] › library/browsercontext-clearcookies.spec.ts:116:3 › should remove cookies by path @webkit-ubuntu-22.04-node18
⚠️ [webkit-library] › library/inspector/cli-codegen-1.spec.ts:24:7 › cli codegen › should click @webkit-ubuntu-22.04-node18
⚠️ [webkit-library] › library/proxy.spec.ts:31:3 › should use proxy @smoke @webkit-ubuntu-22.04-node18
⚠️ [webkit-library] › library/selector-generator.spec.ts:321:7 › selector generator › should prioritize attributes correctly › name @webkit-ubuntu-22.04-node18

37390 passed, 650 skipped
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Merge workflow run.