fix: Remove current fiscal year from Global Defaults (#35960)

* fix: Remove current fiscal year from Global Defaults

* fix: Remove button to set default

* fix: Add utils to get fiscal year

* fix: Incorrect import

* feat: Add hook for naming series parser

erpnext/hooks.py

@@ -354,6 +354,11 @@ doc_events = {
 	},
 }
 
+# function should expect the variable and doc as arguments
+naming_series_variables = {
+	"FY": "erpnext.accounts.utils.parse_naming_series_variable",
+}
+
 # On cancel event Payment Entry will be exempted and all linked submittable doctype will get cancelled.
 # to maintain data integrity we exempted payment entry. it will un-link when sales invoice get cancelled.
 # if payment entry not in auto cancel exempted doctypes it will cancel payment entry.