Fixes and improvements for class synopsis generation

[kocsismate]

• Replace another root XML element format to the "canonical" one: gen_stub would modify the order of the attributes in some cases (e.g. reference/spl/outofrangeexception.xml), so another replacement rule is added to the list
• Remove the superfluous closing parenthesis from class synopsis page includes: Fixes php/doc-en@89eaa41#r92906240
• Always include the constructor on the class manual pages: As default constructors are sometimes documented, sometimes not, gen_stub.php sometimes generates false positive diffs with the docs (e.g. AllowDynamicProperties::__construct() is not currently documented, but it has a stub. Conversely, SplStack::__construct() is documented, but it doesn't have a stub). Therefore, the only sensible way to have deterministic rules is to always document default constructors.

[Girgias]

Does this create a fallback element that doesn't warn if it doesn't exist?

[cmb69]

Yes, it does:

php-src/build/gen_stub.php

Lines 2962 to 2974 in 002d54d

	private function createIncludeElement(DOMDocument $doc, string $query): DOMElement
	{
	$includeElement = $doc->createElement("xi:include");
	$attr = $doc->createAttribute("xpointer");
	$attr->value = $query;
	$includeElement->appendChild($attr);
	$fallbackElement = $doc->createElement("xi:fallback");
	$includeElement->appendChild(new DOMText("\n "));
	$includeElement->appendChild($fallbackElement);
	$includeElement->appendChild(new DOMText("\n "));
	return $includeElement;
	}

[Girgias]

Other than the comment question LGTM

[cmb69]

Thank you!

[cmb69]

Yes, it does:

php-src/build/gen_stub.php

Lines 2962 to 2974 in 002d54d

	private function createIncludeElement(DOMDocument $doc, string $query): DOMElement
	{
	$includeElement = $doc->createElement("xi:include");
	$attr = $doc->createAttribute("xpointer");
	$attr->value = $query;
	$includeElement->appendChild($attr);
	$fallbackElement = $doc->createElement("xi:fallback");
	$includeElement->appendChild(new DOMText("\n "));
	$includeElement->appendChild($fallbackElement);
	$includeElement->appendChild(new DOMText("\n "));
	return $includeElement;
	}

[kocsismate]

Just before merging, I realized that the recent role attribute related changes have not been available in PHP 8.2, so I included the backport into this PR.