fix(bundle): restore local install on macOS

This was (inadvertently, I think) broken by zed-industries#41392

Ref: 4cc6d6a
Ref: zed-industries#41392

Author: claytonrcarter

script/bundle-mac

@@ -6,7 +6,6 @@ source script/lib/blob-store.sh
 build_flag="--release"
 target_dir="release"
 open_result=false
-local_arch=false
 local_only=false
 local_install=false
 can_code_sign=false
@@ -39,6 +38,11 @@ do
             build_flag="";
             target_dir="debug"
             ;;
+        l)
+            export CARGO_INCREMENTAL=true
+            export CARGO_BUNDLE_SKIP_BUILD=true
+            local_only=true
+            ;;
         i) local_install=true;;
         h)
            help_info