quiche qpack don't use dynamic table

hi, in quiche qpack/encoder.rs, i haven't found dynamic table related codes. Is it not open source or is it intentionally designed like this?

Start by reading qpack/encoder.rs and tracing how QPACK header encoding is implemented. Search the repository for dynamic-table references and related tests, then compare the implementation with the relevant QPACK behavior. Done means determining whether dynamic-table support is intentionally absent or identifying the scope needed to add it.

Written by the indexing model from the issue text.