Some emails contain HTML content within the text part, but our content
parser currently strips HTML automatically, which needs a proper fix. In
the new UI, the fallback for HTML content was set to the parsed content,
which may omit HTML tags, leading to issues like missing inline
attachments.
This PR updates the fallback mechanism to use the text content instead
of the parsed content, ensuring HTML elements are preserved.
Fixes
https://linear.app/chatwoot/issue/CW-4046/text-content-is-not-respected-in-emails
94baba1d15