chore: [4.4] update phpstan-baseline.php

[kenjis]

Needs #7722

Description
Update phpstan-baseline.php for #7713
Fixes https://github.com/codeigniter4/CodeIgniter4/actions/runs/5617352335/job/15221317246

Checklist:

• Securely signed commits
• [] Component(s) with PHPDoc blocks, only if necessary or adds value
• [] Unit testing, with >80% coverage
• [] User guide updated
• [] Conforms to style guide

[paulbalandan]

Since the 4.4 branch is not yet released, can we instead add the type declarations/ PHPDocs to those new classes (HotReloader, SiteURI, etc.) and other additions?

[kenjis]

@paulbalandan The return type should be static, but we cannot use it yet:

CodeIgniter4/system/Exceptions/FrameworkException.php

Lines 36 to 39 in dec4b71

	public static function forInvalidDirectory(string $path)
	{
	return new static(lang('Core.invalidDirectory', [$path]));
	}

[paulbalandan]

Then a PHPDoc should suffice.

[kenjis]

Closed by #7723