Popup fail with "Set Show Title in Link Fields" actived

[JRII972]

Issue: Bug report

Describe the bug 📉
Popup don't show whe title use in link field

To Reproduce 📃
Steps to reproduce the behavior:

1. Set Show Title in Link Fields
2. mousehover

Expected behavior 📈
Show popup with preview data

Screenshots 🔮
If applicable, add screenshots to help explain your problem.

OS (please complete the following information): 🌀

• Docker - on Edge

Version Information

Can be found out by running bench version in your respective bench folder.

• Bench Branch: 5.18.0
• Frappe Version: version-15
• ERPNext Version: version-15

Additional context 📄
On dev server

Possible Solution 📑

get_preview_data() {
		return frappe.xcall("frappe.desk.link_preview.get_preview_data", {
			doctype: this.doctype,
			docname: this.name,
		});
	}

It take the "docname" who in the case is the title, and not the actual docname

[JRII972]

i fix with that

get_preview_data() {
		return frappe.xcall("frappe.desk.link_preview.get_preview_data", {
			doctype: this.doctype,
			docname: cur_frm.doc[this.element.data('fieldname')] //replace this.name,
		});
	}