chore: make create-dapp compatible with yarn4 (#9976)

closes: #XXXX
refs: #9852

## Description
As described in the issue linked above, currently, if a user has yarn4 and they run `yarn create @agoric/dapp demo` the command fails because it uses pnp as the linker by default. 

The correct way to go about it imo is to properly document that if a user is using yarn4, they have to configure it to use `node-modules` as its `nodeLinker`.  This can either be done by creating a `.yarnrc.yml` in the directory they are supposedly running the `yarn create` command, or by globally configuring it via `yarn config set nodeLinker node-modules`

bumping the agoric package is needed for yarn4 otherwise it throws an [error](#9852 (comment)) 

## Steps to Test
### Publishing to a local, private registry
1. install and start verdaccio
2. set npm registry server to the localhost address exposed by verdaccio 
```
npm config set registry http://localhost:4873/
```
3. inside the create-dapp folder, run
```
npm publish 
``` 
you may have to auth a user. You can use `npm adduser` and provide test username, password (for verdaccio).
You can also explicitly publish to your private registry using `npm publish --registry=http://localhost:4873`
### Downloading the package from local registry
1. Set nodeLinker to node-modules:
```
yarn config set nodeLinker node-modules
```
2. point npmRegistryServer to localhost:
```
yarn config get npmRegistryServer
```
3. add localhost to unsafe http whitelist:
```
yarn config set unsafeHttpWhitelist 'localhost'
```
4. pull the package using 
```
yarn create @agoric/dapp demo
```
Ensure the package being pulled is the one you published by matching the package version. 

P.S. the above can be achieved by using a `.yarnrc.yml` with the same configuration as well. But for the above instructions, please don't forget to set them to their defaults after testing :) 
### Security Considerations


### Scaling Considerations


### Documentation Considerations

Add a section on docs site while setting up yarn to properly configure nodeLinker

### Testing Considerations

TODO: add CI step to test package download using different yarn versions via [verdaccio](https://verdaccio.org/)

### Upgrade Considerations

packages/create-dapp/package.json

@@ -24,7 +24,7 @@
     "c8": "^9.1.0"
   },
   "dependencies": {
-    "agoric": "^0.21.1"
+    "agoric": "^0.22.0-u16.2"
   },
   "keywords": [],
   "repository": {

packages/create-dapp/test/sanity.test.js

@@ -15,4 +15,5 @@ test('sanity', async t => {
   t.is(await myMain(['--help']), 0, '--help exits zero');
   t.is(await myMain(['--version']), 0, '--version exits zero');
   t.is(await myMain(['--zorgar']), 1, 'unknown flag fails');
+  t.is(await myMain(['demo']), 0, 'create-dapp demo exits 0');
 });