refactor: adapt StatsSigningTestingTool to work with Bytes wrapper for transactions #49271

All 224 tests pass, 1 skipped in 27m 42s

92 files ±0 92 suites ±0 27m 42s ⏱️ -58s
225 tests ±0 224 ✅ ±0 1 💤 ±0 0 ❌ ±0
662 runs ±0 661 ✅ ±0 1 💤 ±0 0 ❌ ±0

Results for commit dfa1545. ± Comparison against earlier commit 4e0a898.