feat(proofs): update standard proof-game timing params

[stevennevins]

Summary

Registry policy/reporting update: the standard proof-game timing parameters are updated to match the new proof-game timing defaults from the optimism contracts/deployer change.

Standard params now encode (mainnet + sepolia):

• proof_maturity_delay_seconds = [43200, 43200] (12 hours, was 7 days)
• dispute_game_finality_delay_seconds = [43200, 43200] (12 hours, was 3.5 days)
• [proofs.permissioned] max_clock_duration = 561600 (6.5 days, was 3.5 days)

This keeps the 7 day total optimistic path: the portal proof-maturity air gap and the dispute-game finality air gap are both 12h, and the optimistic dispute-game max clock duration is 6.5 days.

Changes

• validation/standard/standard-config-params-mainnet.toml
• validation/standard/standard-config-params-sepolia.toml
• ops/internal/report/testdata/l1-report.json — mock deployed chain MaxClockDuration updated 302400 -> 561600 so the report testdata represents a chain compliant with the new standard.
• ops/internal/report/testdata/expected-comment.md — mechanical golden-output update forced by the standard-param bump

Validation

• validation module: go test ./... — PASS
• ops/internal/report TestRenderComment — PASS