[hi-ogawa]

• closes Failure screenshot of a retried test always shows the last attempt #11614

When a browser test failed on several retries, every attempt wrote its failure screenshot to the same file, and the reporter output listed that file under every attempt's error.

This PR saves failure screenshots of tests with retry or repeats as <test>-<repeat>-<retry>.png, like trace files. Tests without them are still saved as <test>.png.

In the reporter output, errors and screenshots are now matched by attempt, so each error lists only the screenshot of the attempt that produced it.

---

For the repro in the issue (a test with retry: 2), the reporter output changes like this (diff and code frame omitted):

Before:

 FAIL  |chromium| basic.test.ts > retried
AssertionError: expected 1 to be 10
Failure screenshot:
  - .vitest/attachments/failure-screenshots/basic.test.ts/retried.png
⎯⎯⎯[1/3]⎯
 FAIL  |chromium| basic.test.ts > retried
AssertionError: expected 2 to be 10
Failure screenshot:
  - .vitest/attachments/failure-screenshots/basic.test.ts/retried.png
⎯⎯⎯[2/3]⎯
 FAIL  |chromium| basic.test.ts > retried
AssertionError: expected 3 to be 10
Failure screenshot:
  - .vitest/attachments/failure-screenshots/basic.test.ts/retried.png
⎯⎯⎯[3/3]⎯

After:

 FAIL  |chromium| basic.test.ts > retried
AssertionError: expected 1 to be 10
Failure screenshot:
  - .vitest/attachments/failure-screenshots/basic.test.ts/retried-0-0.png  👈 
⎯⎯⎯[1/3]⎯
 FAIL  |chromium| basic.test.ts > retried
AssertionError: expected 2 to be 10
Failure screenshot:
  - .vitest/attachments/failure-screenshots/basic.test.ts/retried-0-1.png  👈 
⎯⎯⎯[2/3]⎯
 FAIL  |chromium| basic.test.ts > retried
AssertionError: expected 3 to be 10
Failure screenshot:
  - .vitest/attachments/failure-screenshots/basic.test.ts/retried-0-2.png  👈 
⎯⎯⎯[3/3]⎯