fix(dwg): pull dangling-owned-handle writer fix for empty-file saves (#410)

Bumps acadrust to 1b0a362: block headers no longer list handles of
deleted entities, so DWG saves from a session that removed entities
open with full content in TrueView/AutoCAD instead of empty.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

Cargo.lock

@@ -73,7 +73,7 @@ checksum = "366ffbaa4442f4684d91e2cd7c5ea7c4ed8add41959a31447066e279e432b618"
 [[package]]
 name = "acadrust"
 version = "0.4.0"
-source = "git+https://github.com/OpenAEC-Foundation/acadifc?branch=main#733d6f5d9c876d881baa3badc5c8297928cb923c"
+source = "git+https://github.com/OpenAEC-Foundation/acadifc?branch=main#1b0a362390634c29cb3011c72951dd87ed420958"
 dependencies = [
  "ahash 0.8.12",
  "anyhow",