The timing of this makes a tricky moment. In normal circumstances for the era you would expect this kind of expansion to be taken as a threat to the balance of power (as many have said), and for a shift of alliances with those powers feeling threatened aligning to reverse the expansion or otherwise weaken the power in question.
But 1748 is not "normal circumstances". This is taking place just after Prussia put itself in just the same position - expanding far outside its "station", upsetting The Balance, and aligning continental Europe against the new threat. So into a period in which OTL many European states were casting about for security against Prussian expansionism, we are throwing in a strong incentive for many European states to cast about for security against French expansionism.
The result would be messy, and hard to predict, but we can speak to some general principles (as several other posters have already). The focus of France's neighbors would be even more on the threat the kingdom posed. The Netherlands would take it as an existential threat, and organize their entire European policy around it. Great Britain would be even more interested in a strong continental alliance, so the London-Berlin portion of the Diplomatic Revolution is likely to occur as in our TL. Austria may feel even more alienated from their previous British alliance ITTL, and may well view the French Netherlands as a regrettable but necessary price to deal with the Prussian threat.
The broad strokes that lead up to the 7 Years War of OTL, then, are likely to remain. The details of the next great conflict, though, who knows? It strikes me that many northern German states would be much less comfortable aligning with France against Hanover and Prussia. And its hard to imagine how the Netherlands, though it's incentives might pull both ways, could avoid being drawn in.