fix: decode HTML entities in page titles

[HardeepAsrani]

Titles from get_the_title() pass through the the_title filter (wptexturize/convert_chars), which emits HTML entities such as – for dashes. These were rendered raw in the add data field and also stored in the embedding text. Decode them with html_entity_decode() so the UI and embeddings get clean text.

Pro PR: https://github.com/Codeinwp/hyve/pull/178

Testing

1. Create or edit a page/post with a dash in the title, e.g. Summer Sale - Up to 50% Off, and publish.
2. Go to Hyve → Add Data and find that page in the list.
3. Before fix: the title shows the raw entity, e.g. Summer Sale – Up to 50% Off.
   After fix: it shows the real character, Summer Sale – Up to 50% Off.
4. Add the page to the knowledge base and confirm the title displays correctly in the data list too.

Extra cases (optional)

• Pricing -- Plans & Add-ons → checks en-dash + ampersand
• The "Best" Coffee --- A Review → checks smart quotes + em-dash

Closes: https://github.com/Codeinwp/hyve/issues/174

[github-actions]

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