fix: project filtering based on company in P&L Report (#35943)

* fix: project filtering in P&L Report

(cherry picked from commit 904ca746a6)

* fix: show projects with no company value set

(cherry picked from commit ce252a0d45)

* fix: make company field mandatory in project doctype

(cherry picked from commit 84d4888f5f)

---------

Co-authored-by: Gursheen Anand <gursheen@frappe.io>

erpnext/accounts/report/profit_and_loss_statement/profit_and_loss_statement.js

@@ -14,8 +14,10 @@ frappe.require("assets/erpnext/js/financial_statements.js", function() {
 			"label": __("Project"),
 			"fieldtype": "MultiSelectList",
 			get_data: function(txt) {
-				return frappe.db.get_link_options('Project', txt);
-			}
+				return frappe.db.get_link_options('Project', txt, {
+					company: frappe.query_report.get_filter_value("company")
+				});
+			},
 		},
 		{
 			"fieldname": "include_default_book_entries",

erpnext/projects/doctype/project/project.json

@@ -289,7 +289,8 @@
    "fieldtype": "Link",
    "label": "Company",
    "options": "Company",
-   "remember_last_selected_value": 1
+   "remember_last_selected_value": 1,
+   "reqd": 1
   },
   {
    "fieldname": "column_break_28",