S2CellId.MaximumTile failed

[jmr]

[ RUN      ] S2CellId.MaximumTile
WARNING: All log messages before absl::InitializeLog() is called are written to STDERR
F0000 00:00:1767692680.771108    9728 s2cell_id.h:676] Check failed: is_valid() 
*** Check failure stack trace: ***
    @     0x7f318489905d  absl::lts_20250814::log_internal::LogMessage::PrepareToDie()
    @     0x7f31848990d5  absl::lts_20250814::log_internal::LogMessage::SendToLog()
    @     0x7f3184898af1  absl::lts_20250814::log_internal::LogMessage::Flush()
    @     0x5560dbf25ad2  absl::lts_20250814::log_internal::Voidify::operator&&<>()
    @     0x5560dbf1fcaa  S2CellId::child()
    @     0x5560dbf08475  S2CellId_MaximumTile_Test::TestBody()
    @     0x7f3183fb75ff  testing::internal::HandleSehExceptionsInMethodIfSupported<>()
    @     0x7f3183fae67b  testing::internal::HandleExceptionsInMethodIfSupported<>()
    @     0x7f3183f839ca  testing::Test::Run()
    @     0x7f3183f844f4  testing::TestInfo::Run()
    @     0x7f3183f84eef  testing::TestSuite::Run()
    @     0x7f3183f969ec  testing::internal::UnitTestImpl::RunAllTests()
    @     0x7f3183fb87ac  testing::internal::HandleSehExceptionsInMethodIfSupported<>()
    @     0x7f3183fafb13  testing::internal::HandleExceptionsInMethodIfSupported<>()
    @     0x7f3183f949aa  testing::UnitTest::Run()
    @     0x5560dbf55226  RUN_ALL_TESTS()
    @     0x5560dbf54f33  main
    @     0x7f318382a1ca  (unknown)
    @     0x7f318382a28b  __libc_start_main
    @     0x5560dbf02a65  _start

https://github.com/google/s2geometry/actions/runs/20743520335/job/59557737974?pr=514#step:8:1147

[jmr]

The problem is that S2CellId::next() is not a valid cell for the last cell on face 5.

s2geometry/src/s2/s2cell_id_test.cc

Line 252 in a78853b

EXPECT_EQ(id, id.child(0).maximum_tile(id.next()));

This should be fixed in the code push.