Fallback test not working on macOS

[chung-leong]

  1) Integration tests (rollup-plugin-zigar, Debug)
       Stream handling
         should fallback to the system when open handler returns undefined:
     Error: Access denied
      at hash (file:///private/var/folders/ff/xd1f8x9n5kd2hlv6081ks92m0000gn/T/rollup-integration-test/Debug/749ef44af641845b1a21397ecfce9386ae372b2c.mjs:1527:26)
      at Context.<anonymous> (file:///Users/m1/zigar/zigar-compiler/test/integration/stream-handling/tests.js:152:22)

  2) Integration tests (rollup-plugin-zigar, ReleaseSmall)
       Stream handling
         should fallback to the system when open handler returns undefined:
     Error: Access denied
      at hash (file:///private/var/folders/ff/xd1f8x9n5kd2hlv6081ks92m0000gn/T/rollup-integration-test/ReleaseSmall/a6e9a889f8e8c8973385ba14404b1fb4ba3e37ec.mjs:1519:26)
      at Context.<anonymous> (file:///Users/m1/zigar/zigar-compiler/test/integration/stream-handling/tests.js:152:22)

  3) Integration tests (rollup-plugin-zigar, ReleaseSafe)
       Stream handling
         should fallback to the system when open handler returns undefined:
     Error: Access denied
      at hash (file:///private/var/folders/ff/xd1f8x9n5kd2hlv6081ks92m0000gn/T/rollup-integration-test/ReleaseSafe/14a7ae0753b339db5a4fe82500c13fa5c625e25a.mjs:1527:26)
      at Context.<anonymous> (file:///Users/m1/zigar/zigar-compiler/test/integration/stream-handling/tests.js:152:22)

  4) Integration tests (rollup-plugin-zigar, ReleaseFast)
       Stream handling
         should fallback to the system when open handler returns undefined:
     Error: Access denied
      at hash (file:///private/var/folders/ff/xd1f8x9n5kd2hlv6081ks92m0000gn/T/rollup-integration-test/ReleaseFast/0e8e3ac8f56e78f28af708e47fd6f45622156c39.mjs:1519:26)
      at Context.<anonymous> (file:///Users/m1/zigar/zigar-compiler/test/integration/stream-handling/tests.js:152:22)

[chung-leong]

Not sure what the issue is. Works in Linux. Maybe an issue in Node.js's WASI implement.