Duplicate include path checks in template resolution

[rafageist]

From PHPStan baseline: src/div.php lines 3289 and 3294.

Both branches call self::fileExists( . '.' . DIV_DEFAULT_TPL_FILE_EXT) and repeat the same condition.

Snippet:
if (self::fileExists( . '.' . DIV_DEFAULT_TPL_FILE_EXT)) { .= '.' . DIV_DEFAULT_TPL_FILE_EXT; } elseif (self::fileExists( . '.' . DIV_DEFAULT_TPL_FILE_EXT)) { .= '.' . DIV_DEFAULT_TPL_FILE_EXT; } ... if ((self::fileExists() || self::fileExists()) && >= ) { ... }

Action: remove duplicate checks and confirm the intended alternative path or extension.