Remove 91 entries from grantSkipReasons that are now passing:
- 90 MISSING_IPV6_ADDRS entries (identity aliases now include IPv6)
- 1 RAW_IPV6_ADDR_EXPANSION entry (address aliases no longer expand)
Move GRANT-P09_12B from the removed MISSING_IPV6_ADDRS category to
SUBNET_ROUTE_FILTER_RULES, which is its remaining failure mode.
Updates #2180