SQL Expressions: Exclude CTEs from required Tables (#106479)

Fixes #105030

---------

Co-authored-by: Sam Jewell <2903904+samjewell@users.noreply.github.com>

pkg/expr/sql/parser_test.go

@@ -105,7 +105,7 @@ func TestTablesList(t *testing.T) {
 			)
 			SELECT name, price
 			FROM top_products;`,
-			expected: []string{"products", "top_products"},
+			expected: []string{"products"},
 		},
 		{
 			name:     "with quote",