ECMS-6278: Migrate binary data which contain old path "sites content/live" in URLs

Fix description:
- In SanitizationUpgradePlugin, add migrateJCRDataContents() method to replace the old path by the new one used in Platform 4.
  Limit the migration to HTML, CSS, JS files.

Conflicts:
	upgrade-plugins/src/main/java/org/exoplatform/ecms/upgrade/sanitization/SanitizationUpgradePlugin.java