(Fix) Product description not correctly truncated

[wandji20]

What? Why?

• Closes #10685

Set CSS white-space property to normal and unify height and line-height CSS values

What should we test?

Test possible combinations of very long product descriptions with and without line breaks to confirm text is properly truncated.

Expected result

Release notes

N/A

Changelog Category (reviewers may add a label for the release notes):

• [ ] User facing changes
• [ ] Technical changes only

Dependencies

N/A

Documentation updates

N/A