fix: translate proposition descriptions in Danish, Norwegian, and Finnish news articles

[Copilot]

Proposition description list items in the DA, NO, and FI article versions were left in English, breaking language consistency within otherwise fully-translated pages.

Changes

• -da.html: Translated 5 proposition descriptions to Danish (e.g. "Styrket sikkerhed ved offentlige forsamlinger", "Straffebestemmelse om psykisk vold")
• -no.html: Translated 5 proposition descriptions to Norwegian (e.g. "Styrket sikkerhet ved offentlige sammenkomster", "Sivilt vern under forhøyet beredskap")
• -fi.html: Translated 5 proposition descriptions to Finnish (e.g. "Vahvistettu turvallisuus yleisissä kokoontumistilaisuuksissa", "Rikoslain säännös henkisestä väkivallasta")

Before (all three files):

<li><strong>Prop. 2025/26:133</strong> — Strengthened security at public assemblies</li>
<li><strong>Prop. 2025/26:138</strong> — Criminal provision for psychological violence</li>

After (Danish example):

<li><strong>Prop. 2025/26:133</strong> — Styrket sikkerhed ved offentlige forsamlinger</li>
<li><strong>Prop. 2025/26:138</strong> — Straffebestemmelse om psykisk vold</li>

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