Incorrect computation of retries for failed tests

[shadowusr]

json-reporter incorrectly counts retries: if a test runs N times and fails every time, json-reporter reports that the test has N retries, when in reality it should be N-1.

However, if a test runs N times but passes on the last attempt, json-reporter correctly counts N-1 retries.

Note: This is a breaking change.

Why This Matters

To maintain consistency in retry counting between json-reporter and html-reporter.

Expected Behavior

• Test runs N times and fails all attempts: should report N-1 retries
• Test runs N times and passes on last attempt: should report N-1 retries (already works correctly)

Current Behavior

• Test runs N times and fails all attempts: reports N retries (incorrect)
• Test runs N times and passes on last attempt: reports N-1 retries (correct)

Internal issue: https://nda.ya.ru/t/CRpijrTF7JkvjV