fix(blob): correctly type pre-1.53 onTestEnd event for attachments

[agg23]

Fixes #36317.

Poor typing in internal reporters resulted in an incorrect property access created by #35517. Fix the property access and add a test for pre-1.53 blob attachments.

Ideally these types would be improved in a future change.

[github-actions]

Test results for "tests 1"

6 flaky

⚠️ [firefox-library] › library/inspector/cli-codegen-1.spec.ts:986:7 › cli codegen › should not throw csp directive violation errors @firefox-ubuntu-22.04-node18
⚠️ [firefox-library] › library/trace-viewer.spec.ts:1312:1 › should pick locator in iframe @firefox-ubuntu-22.04-node18
⚠️ [playwright-test] › ui-mode-test-watch.spec.ts:145:5 › should watch all @macos-latest-node18-1
⚠️ [playwright-test] › ui-mode-test-watch.spec.ts:145:5 › should watch all @ubuntu-latest-node22-1
⚠️ [webkit-page] › page/page-screenshot.spec.ts:345:5 › page screenshot › should work while navigating @webkit-ubuntu-22.04-node18
⚠️ [playwright-test] › ui-mode-test-watch.spec.ts:145:5 › should watch all @windows-latest-node18-1

46449 passed, 915 skipped
✔️✔️✔️

Merge workflow run.

[Skn0tt]

oof, that looks like a hard bug to catch!