feat: Expanding ${arch} macro properly for mac.binaries in case of native node packages

[bimusiek]

We have this issue where we pack realm.node that needs signing.
Our CI either builds universal or arm64 + x64 archs.

It was not possible to say which file to sign in mac.binaries, as it is under app.asar.unpacked or app-x64.asar.unpacked and then for universal arch it should double the paths as we need to sign both app-arm64.asar.unpacked and app-x64.asar.unpacked

This fixes the issue, we have tested with:

electron-builder --mac zip:universal --universal --publish always --config electron/electron-fym.yml

and

electron-builder -lm --publish always --config electron/electron-fym.yml

with configuration

[changeset-bot]

🦋 Changeset detected

Latest commit: 5cd812f

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 8 packages

Name	Type
app-builder-lib	Patch
dmg-builder	Patch
electron-builder-squirrel-windows	Patch
electron-builder	Patch
electron-forge-maker-appimage	Patch
electron-forge-maker-nsis-web	Patch
electron-forge-maker-nsis	Patch
electron-forge-maker-snap	Patch

Not sure what this means? Click here to learn what changesets are.

Click here if you're a maintainer who wants to add another changeset to this PR

[bimusiek]

You can test it with:

    "@hernas/electron-builder": "26.0.29",
    "@hernas/app-builder-lib": "26.0.29",

[mmaietta]

This looks solid! Thank you for the contribution!

Quick request. Can you please run the command pnpm prettier when you have a chance? A ton of linter warnings are in the PR. Other than that, this LGTM

[bimusiek]

Hey @mmaietta, prettier issues are fixed 👍

[mmaietta]

Just realized that a changeset is missing. Can you please add this file? Either via pnpm generate-changeset or just copy pasting the content below

File:
.changeset/eighty-snails-dress.md (or any random name within that folder)

Content:

---
"app-builder-lib": patch
---

feat: Expanding `${arch}` macro properly for `mac.binaries` in case of native node packages for unpacked files for macos `universal` target

[bimusiek]

@mmaietta Changeset added.