fix(cli): remove unsupported catalogMode for yarn monorepo (#873)

When creating a monorepo with `yarn` as package manager, the default
template uses the `catalogMode` field which is not supported by
[`yarn`](https://yarnpkg.com/features/catalogs). This PR removes the
field in the `_yarnrc.yml` template file.

```
vp create  --verbose
VITE+ - The Unified Toolchain for the Web

  Vite+ Monorepo

◇ Package name:
  yarn-monorepo

◇ Which package manager would you like to use?
  yarn

◇ yarn@4.12.0 installed

◇ Which agents are you using?
  ChatGPT (Codex)

◇ Which editor are you using?
  VSCode

◇ Set up pre-commit hooks to run formatting, linting, and type checking with auto-fixes?
  Yes

◇ Initialize git repository:
  Yes

Target directory: ./yarn-monorepo
Creating Vite+ monorepo...
Monorepo template created
Git repository initialized
Creating default application in apps/website...

Running: yarn dlx create-vite@latest apps/website --template vanilla-ts --no-interactive --no-immediate --no-rolldown
Usage Error: Unrecognized or legacy configuration settings found: catalogMode - run "yarn config" to see the list of settings supported in Yarn (in /private/var/folders/h4/nx53m7310nl_w6v5568pjb480000gq/T/xfs-4f51d873/dlx-38907/.yarnrc.yml)

$ yarn add [--json] [-F,--fixed] [-E,--exact] [-T,--tilde] [-C,--caret] [-D,--dev] [-P,--peer] [-O,--optional] [--prefer-dev] [-i,--interactive] [--cached] [--mode #0] ...

Failed to create default application: 1
Failed to create monorepo, exit code: 1
```

---------

Signed-off-by: MK (fengmk2) <fengmk2@gmail.com>
Co-authored-by: MK (fengmk2) <fengmk2@gmail.com>

Author: Salnika

packages/cli/templates/monorepo/_yarnrc.yml

@@ -1,6 +1,4 @@
 # used for install vite-plus
-catalogMode: prefer
-
 catalog:
   '@types/node': ^24
   typescript: ^5