Title: QUIC stream starvation when multiple streams have data to send

Title: QUIC stream starvation when multiple streams have data to send: a task in LegoFlow-SWE (Harbor dataset). Description Consider a QUIC connection where two or more streams are used concurrently. Stream 0 is sending a continuous bulk transfer (e.g., a large file) while stream 4 occasionally…

The task

**Description** Consider a QUIC connection where two or more streams are used concurrently. Stream 0 is sending a continuous bulk transfer (e.g., a large file) while stream 4 occasionally needs to send a short message. Data is queued on both streams using `picoquic_add_to_stream`. Even though both streams have data…

Part of Lego-X/LegoFlow-SWE.