fix: upstream error on empty version (backport #13355)

[mergify]

This is an automatic backport of pull request #13355 done by Mergify.

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[julienrbrt]

For some reason, this PR was not backported to v0.46, which is probably not intended (#13896 (review))

cosmos-sdk/store/iavl/store.go

Line 111 in 7c82d64

return &Store{tree: &immutableTree{&iavl.ImmutableTree{}}}, fmt.Errorf("version mismatch on immutable IAVL tree; version does not exist. Version has either been pruned, or is for a future block height")

(v0.45)

cosmos-sdk/store/iavl/store.go

Line 114 in 70589eb

return &Store{tree: &immutableTree{&iavl.ImmutableTree{}}}, nil

(v0.46)

cosmos-sdk/store/iavl/store.go

Line 114 in 8b60d41

return nil, fmt.Errorf("version mismatch on immutable IAVL tree; version does not exist. Version has either been pruned, or is for a future block height")

(v0.47)

cosmos-sdk/store/iavl/store.go

Line 116 in 44ed13d

return nil, errors.New("version mismatch on immutable IAVL tree; version does not exist. Version has either been pruned, or is for a future block height")

(main)