Duplicate Search Result for Same Note

Search result shows multiple or lots of the same notes.

### Expected

If there's only one result, it should only be displayed once.
Or, the same note should not be displayed more than once.

### Observed

Multiple same results for the same note are displayed.

### Reproduced

Unable to repro this myself, but basically it's just doing a regular search:

1. Tap on search
2. Enter the keyword
3. Observe multiple result for same entry, if any.

### Screenshots and App/Device Info

Since there are multiple reports, I'll list the screenshots and app+device info in separate comments.

### Notes

There is a previous issue I found here: https://github.com/Automattic/simplenote-android/issues/995

But it's resolved already although not sure what resolved it.

Start by reproducing a regular search using the steps in the issue and compare the behavior with the previous issue, #995. Trace the Android search-result handling from the search entry point to the displayed results. Done means the same note appears no more than once in a search result.

Written by the indexing model from the issue text.