MDEV-28437: Assertion `!eliminated' failed: Part #2

In SELECT_LEX::update_used_tables(),
do not run the loop setting tl->table->maybe_null
when tl is an eliminated table

(Rationale: First, with current table elimination, tl already
 has maybe_null=1. Second, one should not care what flags
 eliminated tables had)

sql/sql_lex.cc

@@ -4219,6 +4219,8 @@ void SELECT_LEX::update_used_tables()
   while ((tl= ti++))
   {
     TABLE_LIST *embedding= tl;
+    if (!is_eliminated_table(join->eliminated_tables, tl))
+    {
       do
       {
         bool maybe_null;
@@ -4229,6 +4231,8 @@ void SELECT_LEX::update_used_tables()
         }
       }
       while ((embedding= embedding->embedding));
+    }
+
     if (tl->on_expr && !is_eliminated_table(join->eliminated_tables, tl))
     {
       tl->on_expr->update_used_tables();