alternative.match errors should provide details of what caused the error

[nlundquist]

Support plan

• is this issue currently blocking your project? (yes/no): no
• is this issue affecting a production system? (yes/no): yes

Context

• node version: 14
• module version: 17.x
• environment (e.g. node, browser, native): node
• used with (e.g. hapi application, another framework, standalone, ...): standalone
• any other relevant information:

What problem are you trying to solve?

Errors returned during an alternative match mode validation do not describe why the failure occurred.

'any' & 'all' should return all of the underlying property validation failures that prevented a match from occurring.

one should return which subschema indexes succeeded matching in addition to any failures, so users can tell which matches occurred when only one should've.

Partially resolved in #2577