fix: ignore dead columns in user_settings (#24572) (#24573)

(cherry picked from commit 555bed3)

Co-authored-by: Ankush Menat <ankush@frappe.io>

frappe/public/js/frappe/form/grid.js

@@ -975,15 +975,17 @@ export default class Grid {
 
 		let user_settings = frappe.get_user_settings(this.frm.doctype, "GridView");
 		if (user_settings && user_settings[this.doctype] && user_settings[this.doctype].length) {
-			this.user_defined_columns = user_settings[this.doctype].map((row) => {
-				let column = frappe.meta.get_docfield(this.doctype, row.fieldname);
-
-				if (column) {
-					column.in_list_view = 1;
-					column.columns = row.columns;
-					return column;
-				}
-			});
+			this.user_defined_columns = user_settings[this.doctype]
+				.map((row) => {
+					let column = frappe.meta.get_docfield(this.doctype, row.fieldname);
+
+					if (column) {
+						column.in_list_view = 1;
+						column.columns = row.columns;
+						return column;
+					}
+				})
+				.filter(Boolean);
 		}
 	}