Description snippets in search results appear inaccurately continuous when joined

[blms]

testing notes (QA)

On the QA site public search:

• [x] Highlighted descriptions in search results should show [...] between incomplete snippets, such as the below.

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Joining of description snippets without indication can be misleading, especially as solr returns incomplete sentences as snippets sometimes. For example:

Proposed solution:

[kseniaryzhova]

@blms works well, thank you! Closing!