[CL][Misc]Create testcases for GetIfFound

[mattverse]

Background

We recently added a helper method in the osmoutils, that would instead of pannicing if not found (which is what MustGet does), we return a boolean field and an error instead which looks like this:

func GetIfFound(store store.KVStore, key []byte, result proto.Message) (found bool, err error) {
	b := store.Get(key)
	if b == nil {
		return false, nil
	}
	if err := proto.Unmarshal(b, result); err != nil {
		return true, err
	}
	return true, nil
}

Actual implementation: 016f275#diff-b6d3bf142ce5c79530054885a752706a87726315c61bd5ff4a3abe8de0b275a9R129-R138

Suggested Design

We want to come back to this method and eventually add test cases for this specific method.
The PR itself could be made off of concentrated-liquidity-main branch until that branch is merged to main.

Acceptance Criteria

We have a test case for GetIfFound

[hieuvubk]

I would like to work on this issue if no one on process