Need to provide more info when a pact merge conflict occurrs

[uglyog]

When there is a merge conflict, the consumer test fails with something like

expected to be equal to <PactVerified>, got <PactError("Unable to merge pacts, as there were 1 conflict(s) between the interactions")>

[YOU54F]

Is this still required or can it be considered complete?

118daa1

There were some improvements in the above commit to provide more granular information on mismatches.

It looks like we collect errors and report back

message pact errors -

pact-reference/rust/pact_models/src/message_pact.rs

Line 341 in 5699cab

Err(anyhow!("Unable to merge pacts: {}", errors.join(", ")))

sync pact errors -

pact-reference/rust/pact_models/src/sync_pact.rs

Line 325 in 5699cab

if errors.is_empty() {

do we need to do the same in the v4 merge func

pact-reference/rust/pact_matching/src/models/v4/mod.rs

Lines 547 to 558 in 118daa1

	.map(|either| match either {
	Left(i) => i.clone(),
	Right(i) => i,
	Both(_, i) => i.clone()
	})
	.collect(),
	metadata: self.metadata.clone()
	})
	} else {
	Err(s!("Unable to merge pacts, as they have different consumers or providers"))
	}
	}