pegen: fix del error messages for binary ops and others

Author: hauntsaninja

Grammar/python.gram

@@ -589,7 +589,7 @@ del_target[expr_ty] (memo):
     | del_t_atom
     | invalid_del_target
 del_t_atom[expr_ty]:
-    | a=NAME !t_lookahead { _PyPegen_set_expr_context(p, a, Del) }
+    | a=NAME &(')' | ']' | ',' | ';' | NEWLINE) { _PyPegen_set_expr_context(p, a, Del) }
     | '(' a=del_target ')' { _PyPegen_set_expr_context(p, a, Del) }
     | '(' a=[del_targets] ')' { _Py_Tuple(a, Del, EXTRA) }
     | '[' a=[del_targets] ']' { _Py_List(a, Del, EXTRA) }
@@ -651,5 +651,5 @@ invalid_double_type_comments:
     | TYPE_COMMENT NEWLINE TYPE_COMMENT NEWLINE INDENT {
         RAISE_SYNTAX_ERROR("Cannot have two type comments on def") }
 invalid_del_target:
-    | a=star_expression {
+    | a=star_expression &(')' | ']' | ',' | ';' | NEWLINE) {
         RAISE_SYNTAX_ERROR("cannot delete %s", _PyPegen_get_expr_name(a)) }