chore: Fix generating rum models

[ncreated]

What and why?

🧰 This PR updates rum-model-generator so we can generate models from latest commits in rum-events-format.

How?

There were two breaking commits in rum-events-format:

✨RUM-4029 bootstrap telemetry usage schema adding a whole new root-level schema for "usage telemetry". It requires generating polymorphic Swift types at nested level which isn't yet supported. Generation fails with:

🚧 Unimplemented: Building `SwiftAssociatedTypeEnum` case label for JSONObject is not supported

Because we don't yet leverage this feature, this PR explicitly ignores this subschema. The actual work to add this support is moved to RUM-4571.

RUM-1844: Add device and os info to telemetry events introducing telemetry.os and telemetry.device objects. Because definition of these objects is different (although similar) from *.os and *.device in regular RUM events it was raising the exception on being unable to share model definition. To avoid this, telemetry.os and telemetry.device types are shared using different name.

Review checklist

• Feature or bugfix MUST have appropriate tests (unit, integration)
• Make sure each commit and the PR mention the Issue number or JIRA reference
• Add CHANGELOG entry for user facing changes

Custom CI job configuration (optional)

• Run unit tests for Core, RUM, Trace, Logs, CR and WVT
• Run unit tests for Session Replay
• Run integration tests
• Run smoke tests
• Run tests for tools/