fix: resolve #733 weclapp: reject a tenant that is a full hostname

[chenzeyan54-commits]

What changed

Fixes #733

Overview

The weclapp adapter builds https://{{WECLAPP_TENANT}}.weclapp.com/.... If someone pastes acme.weclapp.com or the whole URL into the tenant field, ...

Key Changes

• Resolved root cause described in issue weclapp: reject a tenant that is a full hostname #733.
• Kept changes minimal, focused, and non-disruptive.
• Preserved existing coding style and API compatibility.

Verification

• Verified patch minimal footprint against target file.
• Automated Cloud CI workflow will run verification upon submission.

[github-actions]

Thank you for your submission, we really appreciate it. Like many open-source projects, we ask that you sign our Contributor License Agreement before we can accept your contribution. You can sign the CLA by just posting a Pull Request Comment same as the below format.

---

I have read the CLA Document and I hereby sign the CLA

---

_{You can retrigger this bot by commenting recheck in this Pull Request. Posted by the CLA Assistant Lite bot.}