The global rule
td, th { word-break: break-word; }
was breaking HTML-email tables one glyph per row whenever a column was
narrow, especially for Hebrew/Arabic/CJK headers and long English
strings. The non-standard `word-break: break-word` keyword behaves
like `break-all` in some engines, splitting words at arbitrary
character boundaries even when the word would fit if the column auto-
expanded.
`overflow-wrap: break-word` is already set on body/table, so the rule
only needs to add min-content relaxation for cells. `overflow-wrap:
anywhere` does exactly that without re-introducing break-all
behaviour.
Repro: any transactional Hebrew/RTL order-summary email — each header
(`מוצר`, `כמות`, `מחיר`) collapses to one glyph per row. After the fix
they render on a single line.
Closes#341.
