ifElseChain: rewrite if-else to switch statement (gocritic)

File is not `gofmt`-ed with `-s` (gofmt)

File is not `gofmt`-ed with `-s` (gofmt)

exported method SortDelegationListAsc returns unexported type []github.com/persistenceOne/pstake-native/v2/x/liquidstakeibc/keeper.delegation, which can be annoying to use (golint)

`if` block ends with a `return` statement, so drop this `else` and outdent its block (golint)