feat: add validationMaxErrors option

[mo4islona]

Fixes #8013

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[glasser]

I think it would be more extensible to add a validateOptions option similar to the existing parseOptions. It's a bit awkward that graphql-js does not export a ValidationOptions TS interface, but you could use Parameters<typeof validate>[3] or something.

[mo4islona]

I think it would be more extensible to add a validateOptions option similar to the existing parseOptions. It's a bit awkward that graphql-js does not export a ValidationOptions TS interface, but you could use Parameters<typeof validate>[3] or something.

Implemented.

[glasser]

This looks like a good improvement (very similar to #8062). It is backwards-compatible, so I'm not going to rush to get it in before releasing v5. It needs docs.