Move build to prepack

From [Yarn docs about lifecycle scripts](https://yarnpkg.com/advanced/lifecycle-scripts):

> Note about yarn pack: Although rarely called directly, yarn pack is a crucial part of Yarn. Each time Yarn has to fetch a dependency from a "raw" source (such as a Git repository), it will automatically run yarn install and yarn pack on it to know which are the files to use.

I have found this change to be helpful when trying to install Redux using [the Git protocol](https://yarnpkg.com/features/protocols#git) in order to test out changes on a specific branch.

`prepack` is run as part of a [`npm/yarn publish`](https://docs.npmjs.com/cli/v9/using-npm/scripts#npm-publish) so this change should hopefully not change anything about publishing.

Author: Methuselah96

package.json

@@ -53,7 +53,8 @@
     "test:watch": "vitest",
     "test:cov": "vitest --coverage",
     "build": "rollup -c",
-    "prepublishOnly": "yarn clean && yarn check-types && yarn format:check && yarn lint && yarn test && yarn build",
+    "prepack": "yarn build",
+    "prepublishOnly": "yarn clean && yarn check-types && yarn format:check && yarn lint && yarn test",
     "examples:lint": "eslint --ext js,ts examples",
     "examples:test": "cross-env CI=true babel-node examples/testAll.js",
     "tsc": "tsc"