fix: Prevent template variables from becoming links (#10725)

# Pull Request Template

## Description

**Issue**
This PR fixes template variables in messages (e.g., {{customer.name}})
that were being incorrectly converted to clickable links by the
`MessageFormatter's linkify` functionality. This caused formatting
issues and broken links.

**Solution**
Added a `linkify` parameter to `MessageFormatter` to optionally disable
link conversion

## Type of change

- [x] Bug fix (non-breaking change which fixes an issue)

## How Has This Been Tested?

**Screenshots**

**Before**
<img width="1012" alt="image"
src="https://github.com/user-attachments/assets/70abb238-b4d9-439d-9e51-c7513cf482fb"
/>


**After**
<img width="1012" alt="image"
src="https://github.com/user-attachments/assets/387acb74-674e-4b26-85cc-2d7190d256b1"
/>




## Checklist:

- [x] My code follows the style guidelines of this project
- [x] I have performed a self-review of my code
- [x] I have commented on my code, particularly in hard-to-understand
areas
- [ ] I have made corresponding changes to the documentation
- [x] My changes generate no new warnings
- [x] I have added tests that prove my fix is effective or that my
feature works
- [x] New and existing unit tests pass locally with my changes
- [ ] Any dependent changes have been merged and published in downstream
modules

app/javascript/shared/composables/useMessageFormatter.js

@@ -14,11 +14,13 @@ export const useMessageFormatter = () => {
    * @param {boolean} isAPrivateNote - Whether the message is a private note.
    * @returns {string} - The formatted message.
    */
-  const formatMessage = (message, isATweet, isAPrivateNote) => {
+  // TODO: ref:https://github.com/chatwoot/chatwoot/pull/10725#discussion_r1925300874
+  const formatMessage = (message, isATweet, isAPrivateNote, linkify) => {
     const messageFormatter = new MessageFormatter(
       message,
       isATweet,
-      isAPrivateNote
+      isAPrivateNote,
+      linkify
     );
     return messageFormatter.formattedMessage;
   };