Large Matrix fields hitting max_input_vars limits

[santiDotIO]

Description

Some larger matrix fields quickly hit max_input_vars limits, increasing them is always an option, but a good alternative could be hashing the data rather than sending the raw object.

[brandonkelly]

Yeah, plan is to start submitting the form as JSON (e.g. something like https://stackoverflow.com/a/13038218/1688568) in Craft 4. Would likely break some plugins initially though, so will need to wait until Craft 4.

[brandonkelly]

Closing this in favor of #5554.