chore(package.json): replace postinstall script with prepare for husky setup

Update the npm script from `postinstall` to `prepare` in `package.json` to ensure husky hooks
trigger correctly. Use `|| exit 0` to avoid errors during execution when husky is not present.

Author: Alpha018

package.json

@@ -26,7 +26,7 @@
     "test:cov": "jest --coverage",
     "test:debug": "node --inspect-brk -r tsconfig-paths/register -r ts-node/register node_modules/.bin/jest --runInBand",
     "test:e2e": "jest --config ./test/jest-e2e.json",
-    "postinstall": "husky || true"
+    "prepare": "husky || exit 0"
   },
   "dependencies": {
     "@nestjs/common": "^11.1.5",