Move aarch64-apple dist builder to dynamic llvm linking and enable autodiff in CI for it

Co-authored-by: sgasho <SuganoShota1999@gmail.com>

Author: ZuseZ4

src/ci/github-actions/jobs.yml

@@ -504,7 +504,7 @@ auto:
   - name: dist-aarch64-apple
     env:
       SCRIPT: >-
-        ./x.py dist bootstrap
+        ./x.py dist bootstrap enzyme
         --include-default-paths
         --host=aarch64-apple-darwin
         --target=aarch64-apple-darwin
@@ -513,6 +513,7 @@ auto:
         --enable-sanitizers
         --enable-profiler
         --set rust.jemalloc
+        --set llvm.link-shared=true
         --set rust.lto=thin
         --set rust.codegen-units=1
       # Aarch64 tooling only needs to support macOS 11.0 and up as nothing else