fix: add a go back button on the contents tab (#34749)

[gortiz-dotcms]

Added a go back button on the contents tab

This PR fixes: #34749

[claude]

Claude finished @gortiz-dotcms's task in 42s —— View job

---

Rollback Safety Analysis

• Read rollback-unsafe categories reference
• Get the full PR diff
• Analyze diff against unsafe categories
• Apply appropriate label

Result: ✅ Safe to Rollback

The change is limited to contentlet_actions_inc.jsp — a pure UI/JSP modification that adds a "Go Back" button when the user navigates from the publishing queue. It contains no database migrations, no Elasticsearch mapping changes, no data transformations, no API contract changes, and no serialization model changes. None of the rollback-unsafe categories (C-1 through M-4) apply.

[github-actions]

🤖 Bedrock Review — deepseek.v3.2

[🟡 Medium] dotCMS/src/main/webapp/html/portlet/ext/contentlet/contentlet_actions_inc.jsp:23 — Direct use of referer request parameter without validation or sanitization for inclusion in an HTML attribute (href="<%= referer %>"). This could lead to cross-site scripting (XSS) if the parameter contains malicious data. Should be validated or escaped.

[🟡 Medium] dotCMS/src/main/webapp/html/portlet/ext/contentlet/contentlet_actions_inc.jsp:23 — The condition referer.contains("publishing-queue") is a string match that could be bypassed or matched incorrectly (e.g., a crafted referer URL). This is a weak security control if the referer is being trusted for navigation. Consider a more robust flag or parameter.

---

_{Run: #27843117162 · tokens: in: 781 · out: 177 · total: 958}