fix: add microbundle global for preact/hooks package

[prinsss]

Description

This fixes "useMemo undefined" error when using useSignal hook with UMD scripts.

The UMD builds of preact/hooks package will attach itself to the global window.preactHooks when using CDN, while @preact/signals is searching for window.hooks and cause this problem.

There is also some messages about this in microbundle's output log:

$ pnpm run build:preact

> pnpm _build --cwd packages/preact && pnpm postbuild:preact
> microbundle --raw --globals @preact/signals-core=preactSignalsCore "--cwd" "packages/preact"

No name was provided for external module 'preact/hooks' in output.globals – guessing 'hooks'

Bug Reproduction

Here is a minimal reproduction page demonstrating the issue.

https://stackblitz.com/edit/preact-signals-cdn

Uncaught TypeError: Cannot read properties of undefined (reading 'useMemo')
    at useSignal (signals.min.js:1:2667)
    at g.App [as constructor] (use-signal-broken.html:36:29)
    at g.N [as render] (preact.min.js:1:8510)
    at j (preact.min.js:1:6180)
    at x (preact.min.js:1:2071)
    at j (preact.min.js:1:6394)
    at O (preact.min.js:1:8631)
    at use-signal-broken.html:50:7

Expected Changes

The changes to the UMD build of @preact/signals package after applying this patch is as below:

--- signals-broken.min.js       2023-09-20 18:46:16
+++ signals-fixed.min.js        2023-09-20 18:46:14
@@ -11,7 +11,7 @@
                : i(
                                ((n || self).preactSignals = {}),
                                n.preact,
-                               n.hooks,
+                               n.preactHooks,
                                n.preactSignalsCore
                  );
 })(this, function (n, i, r, t) {

[changeset-bot]

🦋 Changeset detected

Latest commit: 79efe32

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

This PR includes changesets to release 1 package

Name	Type
@preact/signals	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

[netlify]

✅ Deploy Preview for preact-signals-demo ready!

Name	Link
🔨 Latest commit	79efe32
🔍 Latest deploy log	https://app.netlify.com/sites/preact-signals-demo/deploys/650ad4404da9e9000857644a
😎 Deploy Preview	https://deploy-preview-415--preact-signals-demo.netlify.app
📱 Preview on mobile	Toggle QR Code... Use your smartphone camera to open QR code link.

---

To edit notification comments on pull requests, go to your Netlify site configuration.

[rschristian]

Damn, good spot. Not sure how I missed that.

[rschristian]

Thanks!