Remove obsolete @sistent/mui-datatables from devDependencies

This package was causing npm dependency resolution conflicts after PR #1218
switched to the GitHub fork of mui-datatables. The code now uses the
'mui-datatables' package from github:leecalcote/mui-datatables, so the
old @sistent/mui-datatables package in devDependencies is no longer needed.

Co-authored-by: fitzergerald <182300328+fitzergerald@users.noreply.github.com>

Author: Copilot

package-lock.json

@@ -68,7 +68,6 @@
     "jest": "^29.7.0",
     "jest-environment-jsdom": "^29.7.0",
     "lint-staged": "^15.5.0",
-    "@sistent/mui-datatables": "^5.1.2",
     "notistack": "^3.0.2",
     "prettier": "^3.5.3",
     "prettier-plugin-organize-imports": "^4.1.0",