docs(quic): say which sends Abort() reports false

Abort()'s comment and the consumer notes said every send not yet
delivered reports false. msquic completes a send, true, as soon as it
has copied it into its send buffer, and the reset then discards it, so
only the sends msquic had not taken yet report false; the byte-cap case
in ShouldRecieveByCallbackQUIC saw all sixteen of the peer's report
true. Also: an onData already under way on another thread when Abort()
is called finishes.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

interfaces/Crafter.Network-ClientQUIC.cppm

@@ -227,12 +227,14 @@ namespace Crafter {
         // Reset both directions at once with a QUIC application error code
         // (62 bits; larger values are clamped): the peer's receive side sees
         // a reset and its send side a stop-sending. Returns at once. Sends
-        // not yet delivered report false, no onData follows (not even the
-        // rest of a run being delivered when called from inside one), and
-        // onEnd(false) follows unless the end was delivered already or the
-        // wrapper is destroyed first. Callable from any thread and from
-        // inside this stream's callbacks, which is how a server enforces a
-        // byte cap. A no-op on a closed or moved-from wrapper.
+        // msquic has not taken yet report false (one already in its send
+        // buffer reported true, and the reset discards it); no onData
+        // follows (not even the rest of a run being delivered when called
+        // from inside one; from another thread, one already under way
+        // finishes); and onEnd(false) follows unless the end was delivered
+        // already or the wrapper is destroyed first. Callable from any thread
+        // and from inside this stream's callbacks, which is how a server
+        // enforces a byte cap. A no-op on a closed or moved-from wrapper.
         void Abort(std::uint64_t errorCode = 0);
 #endif