chore: avoid access Distance private field of U256 #10734

Job	Run time
build	6s
Unused dependency check	8m 7s
various checks	14m 26s
E2E tests (ubuntu-latest, /home/runner/.local/share/autonomi)	13m 27s
E2E tests (windows-latest, C:\\Users\\runneradmin\\AppData\\Roaming\\autonomi)	30m 12s
E2E tests (macos-latest, /Users/runner/Library/Application\ Support/autonomi)	13m 59s
lint	20s
Unit Tests (ubuntu-latest)	5m 22s
Unit Tests (windows-latest)	11m 43s
Unit Tests (macos-latest)	5m 54s
Network churning tests (ubuntu-latest, /home/runner/.local/share/autonomi/node, /home/runner/.loc...	18m 30s
Network churning tests (windows-latest, C:\\Users\\runneradmin\\AppData\\Roaming\\autonomi\\node,...	29m 30s
Large file upload	4m 21s
Network churning tests (macos-latest, /Users/runner/Library/Application Support/autonomi/node, /U...	19m 0s
Verify data location and Routing Table (ubuntu-latest, /home/runner/.local/share/autonomi/node, /...	21m 36s
Verify data location and Routing Table (windows-latest, C:\\Users\\runneradmin\\AppData\\Roaming\...	31m 53s
Verify data location and Routing Table (macos-latest, /Users/runner/Library/Application Support/a...	21m 15s
	4h 9m 41s

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