`npx create-electron-app` fails on npm v12

### Pre-flight checklist

- [x] I have read the [contribution documentation](https://github.com/electron/forge/blob/main/CONTRIBUTING.md) for this project.
- [x] I agree to follow the [code of conduct](https://github.com/electron/electron/blob/main/CODE_OF_CONDUCT.md) that this project uses.
- [x] I have searched the issue tracker for a bug that matches the one I want to file, without success.

### Forge version

7.11.2

### Electron version

44.0.0

### Operating system

macOS 26.6.2

### Last known working Forge version

_No response_

### Expected behavior

`npx create-electron-app` succeeds.

### Actual behavior

`npx create-electron-app` fails.

```
% npx create-electron-app .
npm notice run npx
npm notice run 'create-electron-app' .

✔ Resolving package manager: npm v12.0.2
✔ Resolving template: vite-typescript
› Using @electron-forge/template-vite-typescript (local module)
✔ Resolving Electron version: latest
› Using Electron version tag: latest
✔ Initializing directory
✔ Initializing git repository
✔ Preparing template
✔ Initializing template
⚠ Installing template dependencies
✔ Installing production dependencies
✖ Failed to install modules: ["@electron-forge/plugin-vite@^7.11.2","@types/electron-squirrel-startup@^1.0.2","@typescript-eslint/eslint-plugin@^5.0.0","@typescript-eslint/parser@^5.0.0","eslint@^8.0.1","esl
int-plugin-import@^2.25.0","typescript@~4.5.4","vite@^5.0.12"]
With output: Command failed with a non-zero return code (1):
npm install @electron-forge/plugin-vite@^7.11.2 @types/electron-squirrel-startup@^1.0.2 @typescript-eslint/eslint-plugin@^5.0.0 @typescript-eslint/parser@^5.0.0 eslint@^8.0.1 eslint-plugin-import@^2.25.0
typescript@~4.5.4 vite@^5.0.12 --save-dev
npm error code EALLOWGIT
npm error Fetching packages of type "git" have been disabled
npm error Refusing to fetch "@electron/node-gyp@git+https://github.com/electron/node-gyp.git#06b29aafb7708acef8b3669835c8a7857ebc92d2"
npm error A complete log of this run can be found in: /Users/nikwen/.npm/_logs/2026-08-27T12_03_07_388Z-debug-0.log
npm error code EALLOWGIT
npm error Fetching packages of type "git" have been disabled
npm error Refusing to fetch "@electron/node-gyp@git+https://github.com/electron/node-gyp.git#06b29aafb7708acef8b3669835c8a7857ebc92d2"
npm error A complete log of this run can be found in: /Users/nikwen/.npm/_logs/2026-08-27T12_03_07_388Z-debug-0.log
⚠ Finalizing dependencies
✖ Failed to install modules: ["@electron/fuses@^1.0.0","@electron-forge/cli@^7.11.2","@electron-forge/maker-squirrel@^7.11.2","@electron-forge/maker-zip@^7.11.2","@electron-forge/maker-deb@^7.11.2","@elect
ron-forge/maker-rpm@^7.11.2","@electron-forge/plugin-auto-unpack-natives@^7.11.2","@electron-forge/plugin-fuses@^7.11.2"]
With output: Command failed with a non-zero return code (1):
npm install @electron/fuses@^1.0.0 @electron-forge/cli@^7.11.2 @electron-forge/maker-squirrel@^7.11.2 @electron-forge/maker-zip@^7.11.2 @electron-forge/maker-deb@^7.11.2 @electron-forge/maker-rpm@^7.11.2
@electron-forge/plugin-auto-unpack-natives@^7.11.2 @electron-forge/plugin-fuses@^7.11.2 --save-dev
npm error code EALLOWGIT
npm error Fetching packages of type "git" have been disabled
npm error Refusing to fetch "@electron/node-gyp@git+https://github.com/electron/node-gyp.git#06b29aafb7708acef8b3669835c8a7857ebc92d2"
npm error A complete log of this run can be found in: /Users/nikwen/.npm/_logs/2026-08-27T12_03_18_810Z-debug-0.log
npm error code EALLOWGIT
npm error Fetching packages of type "git" have been disabled
npm error Refusing to fetch "@electron/node-gyp@git+https://github.com/electron/node-gyp.git#06b29aafb7708acef8b3669835c8a7857ebc92d2"
npm error A complete log of this run can be found in: /Users/nikwen/.npm/_logs/2026-08-27T12_03_18_810Z-debug-0.log
```

npm v12 disables fetching Git dependencies by default. (It also disables postinstall scripts, which causes issues with some of the dependencies that get installed.)

### Steps to reproduce

1. Upgrade npm to v12
2. `npx create-electron-app my-app`

### Additional information

Can be worked around with the following `.npmrc`:

```
allow-git=all
```

It'll also cause issues with postinstall scripts that don't run:

```
% npm install

up to date, audited 707 packages in 772ms

32 vulnerabilities (3 low, 1 moderate, 27 high, 1 critical)

To address all issues (including breaking changes), run:
npm audit fix --force

Run `npm audit` for details.
npm warn install-scripts 3 packages had install scripts blocked because they are not covered by allowScripts:
npm warn install-scripts electron-winstaller@5.4.4 (install: node ./script/select-7z-arch.js)
npm warn install-scripts esbuild@0.21.5 (postinstall: node install.js)
npm warn install-scripts fsevents@2.3.3 (install: (install scripts present))
npm warn install-scripts
npm warn install-scripts Run `npm install-scripts ls` to review, or `npm install-scripts approve ` to allow.
```

As a result, the default packaging scripts won't work. We might want to list those packages as approved in the template `package.json` files.

The failure occurs in npx create-electron-app when npm v12 installs the generated template. Start by reproducing the command with npm v12 and inspecting the template package.json files, especially their dependency and script settings. Done means a generated app installs without the manual .npmrc workaround and its default packaging scripts work.

Written by the indexing model from the issue text.