workerdMerged#6248
Revert "Update standard.c++ pumpTo impl to use draining read"
Reverts a commit that introduced issues with the standard.c++ pumpTo impl
8 substantial PRs (10 merged, 3 open/draft). 7 in workerd, 1 in node.
Reverts a commit that introduced issues with the standard.c++ pumpTo impl
Removes blob input stream autogate after full deployment
Applies multiple safety fixups
Updated pumpTo loop to use draining read optimization for performance improvement
Improved resizable ArrayBuffer handling with multiple fixes
Fixed multiple issues with draining read implementation and added autogate
Decoupled AbortSignal from IOContext, enabling cross-context aborts
Prototype for new stream implementation in core, adding support to FileHandle with tests and benchmarks