[Pipeline] Phaseout fragment and double buffer info from pipeline pass (tile-ai#711)

* Update submodule 'tvm' to commit e11521e6936a827efa334588d29571fbb4620107

* Refactor inject_pipeline.cc to enhance pipeline body rewriting and condition handling

- Introduced a new function to replace IfThenElse nodes with their then_case while preserving attributes.
- Streamlined the PipelineBodyRewriter to improve buffer access rewriting and async state management.
- Enhanced the handling of pipeline loop conditions and added support for predicate conditions in the pipeline body.
- Removed obsolete code and improved overall code clarity and maintainability.

* lint fix

* Refactor return statements in inject_pipeline.cc to remove unnecessary std::move calls

- Updated return statements in multiple methods to return objects directly instead of using std::move, improving code clarity and potentially avoiding unnecessary moves.
- Ensured consistent handling of BufferStore and BufferLoad nodes during pipeline transformations.

* test fix

Author: LeiWang1999