Support non-streaming ORDER BY queries

### Feature Summary

Add bounded non-streaming cross-partition ORDER BY execution to the Cosmos DB Rust driver.

### Feature Description

Use the query plan's `has_non_streaming_order_by` signal to select a collect, sort, and page stage for plans that cannot use streaming ordered merge.

Validation and acceptance criteria:

- Trigger this path from `has_non_streaming_order_by`.
- Collect partition results within a configured resource limit, sort globally, and page the sorted output.
- Reuse exactly the same Cosmos multi-column comparator and deterministic tie rules as streaming ORDER BY.
- Initially reject external continuation tokens explicitly.
- Enforce a clear resource-limit failure instead of unbounded buffering.
- Support vector-score and aggregate/GROUP BY ORDER BY combinations required by query plans.
- Cover ascending/descending mixed columns, ties, empty inputs, resource exhaustion, vector scores, aggregate/GROUP BY combinations, and partition splits.

### Use Case

Applications need correct global ordering for query-plan shapes that require full buffering, including computed scores and post-aggregation ordering.

### Alternatives

Forcing these plans through streaming merge is incorrect when the ordering key is unavailable until after computation or aggregation; unbounded client-side collection is unsafe.

### Additional Context

Implement under `sdk/cosmos/azure_data_cosmos_driver/src/driver/dataflow/`. This depends on the parent issue's pipeline factory, buffering limits, envelopes, response transformation, and non-resumable continuation policy, plus the shared comparator behavior defined by streaming ORDER BY. Cross-SDK references: .NET `NonStreamingOrderByQueryTests` and the `PipelineFactory` flag path; Java `NonStreamingOrderByDocumentQueryExecutionContext`, `NonStreamingOrderByDocumentProducer`, and related utilities.

Start in sdk/cosmos/azure_data_cosmos_driver/src/driver/dataflow/ and read the parent issue's pipeline factory, buffering limits, envelopes, response transformation, and non-resumable continuation policy. Trace the has_non_streaming_order_by path and compare it with the shared streaming ORDER BY comparator; cross-check the referenced .NET and Java implementations. Done means bounded global sorting and paging, explicit rejection of external continuation tokens, and coverage of the listed ordering, aggregation, vector-score, split, empty-input, and resource-exhaustion cases.

Written by the indexing model from the issue text.