Fix Trendz release table

[RomenKost]

Description

Fixes the Trendz Releases table layout — the Instructions column with the Upgrade button was being clipped on standard desktop widths because the table had 8 columns and one of the headers ("ThingsBoard Recommended") was very long.

This PR makes two minimal changes:

1. Shorter column header: "ThingsBoard Recommended" → "TB Compatible". The data underneath is just 4.3.x / 4.2.x / … so the column no longer needs the wider label, and the table fits its container.
2. Punchier highlights: shortened the Release Notes & Highlights text for all 8 release families. Each entry now picks only the headline feature(s) from the actual release notes and stays under ~35 characters — e.g. 1.15 → "Bidirectional TB Sync, Anomaly Wizard"; 1.10 → "New UI, Dark
   Mode, Forecasting".

No CSS, font-size, padding, or structural changes — same 8 columns, same styling, just shorter labels.

Type of change

• Component, layout, or styling change (src/components/**, src/styles/**)

Affected products

Trendz only (/docs/trendz/releases/releases-table/).

Related issues

• Closes #

Checklist

• pnpm check passes (Astro / TypeScript)
• pnpm lint:eslint passes
• pnpm lint:slugcheck passes (required if pages were added/renamed/moved across languages)
• pnpm lint:linkcheck passes locally — required to merge; run it before requesting review (use pnpm lint:linkcheck:nobuild if you already ran a build)
• Renamed/removed pages have a redirect in src/data/redirects.ts, and pnpm generate:redirects was run — N/A, no page renames
• No hardcoded versions — values come from src/data/versions.ts
• Screenshots attached for visual changes