Rjf/expected maxspeed

[robfitzgerald]

Closes #104 by handling the supposed degenerate case where a record has a min speed but no posted max speed. when collecting speed values we now confirm that max_speed is not None.

[robfitzgerald]

@yamilbknsu this comes from an error on my continental run:

[2026-02-11T21:07:32Z INFO  bambam_omf::collection::collector] Collecting OvertureMaps Connector records from release 2026-01-21.0
[2026-02-11T21:07:32Z INFO  bambam_omf::collection::collector] Started collection
[2026-02-11T21:08:07Z INFO  bambam_omf::collection::collector] Collection time 34.542277059s
[2026-02-11T21:09:10Z INFO  bambam_omf::collection::collector] Deserialization time 63.490600362s
[2026-02-11T21:09:10Z INFO  bambam_omf::collection::collector] Total time 98.032924713s
[2026-02-11T21:09:16Z INFO  bambam_omf::collection::collector] Collecting OvertureMaps Segment records from release 2026-01-21.0
[2026-02-11T21:09:16Z INFO  bambam_omf::collection::collector] Started collection
[2026-02-11T21:12:07Z INFO  bambam_omf::collection::collector] Collection time 170.186251831s
[2026-02-11T21:13:16Z INFO  bambam_omf::collection::collector] Deserialization time 69.177046809s
[2026-02-11T21:13:16Z INFO  bambam_omf::collection::collector] Total time 239.363331088s
locating missing connectors: 209696533it [01:59, 1748865.00it/s]
[2026-02-11T21:17:33Z INFO  bambam_omf::graph::serialize_ops] all connectors accounted for
Error: InternalError("Expected a value for `max_speed`: SegmentSpeedLimit { min_speed: Some(SpeedLimitWithUnit { value: 35, unit: Mph }), max_speed: None, is_max_speed_variable: None, when: Some(SegmentAccessRestrictionWhen { during: None, heading: Some(Backward), using: None, recognized: None, mode: None, vehicle: None }), between: Some([0.0, 0.418244116]) }")
srun: error: x1004c0s7b1n0: task 0: Exited with exit code 1

[yamilbknsu]

Looks great, Thank you!