Why not apply rawm to the incidental kasrah in «أَنْذِرِ النَّاسَ»?

Rules of Waqf — Correct Stopping, Resumption, Rawm, Ishmām and Qurʾānic Orthography

• Because rāʾ is a madd letter
• Because it bears tanwīn
• Because it is not an original vowel
• Because the word has hāʾ