fix(x/twap): genesis issue blocking edge net set up

[p0mvn]

Closes: #5041

What is the purpose of the change

More context: https://osmosis-network.slack.com/archives/C027ELA290B/p1682692206195569

Currently, our validation for TwapRecords in InitGenesis() is stricter than it should be.

If there is a twap error, it expects both "p0" spot price and "p1" spot price to be zero.

However, that is not the guarantee from the core logic:

osmosis/x/twap/logic.go

Lines 53 to 64 in b101d06

	if err0 != nil || err1 != nil {
	latestErrTime = ctx.BlockTime()
	// In the event of an error, we just sanity replace empty values with zero values
	// so that the numbers can be still be calculated within TWAPs over error values
	// TODO: Should we be using the last spot price?
	if (sp0 == sdk.Dec{}) {
	sp0 = sdk.ZeroDec()
	}
	if (sp1 == sdk.Dec{}) {
	sp1 = sdk.ZeroDec()
	}
	}

In the core logic above, if "p0" gets a twap error but "p1" does not, "p0" is set to zero but "p1" isn't.

Therefore, we should change our init genesis logic to match the core's constraints.

Brief Changelog

• make the change
• add tests

Testing and Verifying

• Refactored test cases

Documentation and Release Note

• Does this pull request introduce a new feature or user-facing behavior changes? no
• Is a relevant changelog entry added to the Unreleased section in CHANGELOG.md? no
• How is the feature or change documented? not applicable

[czarcas7ic]

LGTM