Missing space before UNION when building CREATE VIEW

Summary

When CreateStatement::build() reconstructs a CREATE VIEW ... AS SELECT ... UNION ...
statement, the output misses the whitespace between the built SELECT and the
trailing body tokens. Result: invalid SQL such as ... WHERE 3 = 3union all (...).

This was previously reported downstream in phpMyAdmin:

• phpmyadmin/phpmyadmin#19692
• phpmyadmin/phpmyadmin#18515 (same bug, older)

Reproduction

use PhpMyAdmin\SqlParser\Parser;

$sql = "CREATE ALGORITHM=UNDEFINED DEFINER=`root`@`localhost` SQL SECURITY DEFINER "
     . "VIEW `v1` AS select 1 AS `a` where 3 = 3 union all (select 2 AS `a`)";

echo (new Parser($sql))->statements[0]->build();

Actual output:

CREATE ALGORITHM=UNDEFINED DEFINER=`root`@`localhost` SQL SECURITY DEFINER VIEW `v1`  AS SELECT 1 AS `a` WHERE 3 = 3union all (select 2 AS `a`)

(note: 3 = 3union all — no space).

Expected: a space before union all, producing valid SQL.

Environment

• Library version: current master (head f440917e)
• PHP: 8.4

Start at CreateStatement::build() and reproduce the issue with the SQL example through PhpMyAdmin\SqlParser\Parser. Verify that rebuilding the CREATE VIEW preserves whitespace before the trailing UNION body and produces valid SQL rather than 3union all.