queryScalar - check subquery before changing params

[i-just]

Description

When running a query through our version of queryScalar, check if the subquery doesn’t have distinct, groupBy, having or union and only overwrite its select, orderBy, limit, and offset params if it doesn’t.

Related issues

#15001

[samhibberd]

@brandonkelly does this also impact the exists() query method, since upgrading to 4.10.x which introduced this logic to work off the subquery:

cms/src/elements/db/ElementQuery.php

Lines 1693 to 1699 in db4292c

	try {
	return $this->prepareSubquery()
	->select('elements.id')
	->exists($db);
	} catch (QueryAbortedException) {
	return false;
	}

We are running into the same issue with the exists method when a HAVING clause is used (for us with simplemap ethercreative/simplemap#391 (comment))

[brandonkelly]

@samhibberd Craft 4.10.8 and 5.2.10 are out with a fix for that.