DB BaseBuilder Join() - RawSql as table

### PHP Version

8.2

### CodeIgniter4 Version

4.5.3

### CodeIgniter4 Installation Method

Composer (using `codeigniter4/appstarter`)

### Which operating systems have you tested for this bug?

Windows

### Which server did you use?

apache

### Database

_No response_

### What happened?

CRITICAL - 2024-07-24 14:10:15 --> TypeError: CodeIgniter\Database\BaseBuilder::join(): Argument #1 ($table) must be of type string, CodeIgniter\Database\RawSql given, called in C:\xampp\portal\vendor\codeigniter4\framework\system\Model.php on line 930
[Method: GET, Route: public/fuel/pricing/getprice]
in SYSTEMPATH\Database\BaseBuilder.php on line 620.
1 SYSTEMPATH\Model.php(930): CodeIgniter\Database\BaseBuilder->join(Object(CodeIgniter\Database\RawSql), 't5.product_id = `fpp`.id', 'inner')

### Steps to Reproduce

Used to be able to use RawSql for table on join()

```php
$builder = $this
->select("{$this->table}.description_id AS id, fpd.description,
fpp.product,
DATE({$this->table}.effective) AS effective,
{$priceField}")
->join(
"{$this->descTable} AS fpd",
"fpd.id = {$this->table}.description_id",
'inner'
)
->join(
"{$this->prodTable} AS fpp",
"fpp.id = {$this->table}.product_id",
'inner'
);

$sql = "(SELECT
fpp.id AS product_id,
IF(ph.TAXCLASS IS NULL,0,ph.TAXCLASS) AS taxclass,
IF(pw.SALESTAXCLASS IS NULL,0,pw.SALESTAXCLASS) AS salestaxclass
FROM
misc.fuel_prices_product AS fpp
LEFT JOIN pds.pds_prodhead AS ph ON ph.PRODUCTCODE = fpp.product
LEFT JOIN pds.pds_prodware AS pw ON pw.PRODUCTCODE = fpp.product AND pw.PACKCODE = '' AND pw.WHALPHA = 3
GROUP BY fpp.id) t5";

$builder->join(
new RawSql($sql),
"t5.product_id = `fpp`.id",
'inner'
);

// $params['id'] = 14;
$builder->where("{$this->table}.description_id", $params['id']);

$builder->where("DATE({$this->table}.effective) BETWEEN DATE_SUB('{$params['fromdate']}',INTERVAL 15 DAY) AND '{$params['todate']}'");

$builder->where('fpp.product', $params['product']);

$builder->groupBY("DATE({$this->table}.effective)");

$builder->orderBy("{$this->table}.effective", 'ASC');

$data = $builder->get()->getResultObject();
```

### Expected Output

Get errors now.

Fix by adding adding RawSq type:

```php
public function join(string|RawSql $table, $cond, string $type = '', ?bool $escape = null)
{
```

Adding is_string($table) twice in BaseBuilder::trackAliases()

```php
protected function trackAliases($table)
{
if (is_array($table)) {
foreach ($table as $t) {
$this->trackAliases($t);
}

return;
}

// Does the string contain a comma? If so, we need to separate
// the string into discreet statements
if (is_string($table) && str_contains($table, ',')) {
return $this->trackAliases(explode(',', $table));
}

// if a table alias is used we can recognize it by a space
if (is_string($table) && str_contains($table, ' ')) {
```

### Anything else?

**I'd send in a PR but I'm slammed busy at the moment and I don't have my development environment ready.**