chore: remove usage of v1 errors from v2

[bznein]

Description

Note: there are still some imports of channelv1 in v2:

> grep -rli "modules/core/04-channel/types"
types/tx.pb.go
keeper/keeper_test.go
keeper/keeper.go
keeper/msg_server.go

These are all related to using the ResponseResultType enum in V2. I think we should duplicate it to V2 too and get totally rid of v1 imports in v2. But I'd prefer doing so in a separate PR (assuming people agree)

closes: #7476

---

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[sonarcloud]

Quality Gate passed for 'ibc-go'

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud