fix(plugin-render): pass effective rotation to RenderLayer rendering

[lvdezhong]

Summary

Fix RenderLayer rendering for rotated PDF pages by passing the effective page rotation to renderPage.

Problem

The scroll/layout layer already accounts for page rotation when calculating page dimensions, but framework RenderLayer components rendered pages without passing a rotation option. For PDFs with per-page rotation metadata, the page container and rendered image could disagree, making pages appear sideways or stretched.

Changes

• Add an optional rotation override prop to RenderLayer.
• Default render rotation to page.rotation + document.rotation when no override is provided.
• Pass the computed rotation into renderPage for React/Preact, Vue, and Svelte render layers.
• Include rotation in render dependencies so pages re-render when rotation changes.
• Keep plugin-render lint unblocked by avoiding a bare window reference in the shared render layer and marking the existing lifecycle config argument as intentionally unused.

Validation

• pnpm exec prettier --check packages/plugin-render/src/shared/components/render-layer.tsx packages/plugin-render/src/lib/render-plugin.ts packages/plugin-render/src/vue/components/render-layer.vue packages/plugin-render/src/svelte/components/RenderLayer.svelte .changeset/render-layer-rotation.md
• git diff --check
• pnpm --filter @embedpdf/plugin-render lint
• pnpm --filter @embedpdf/plugin-render build

Note: the build command completes successfully, while the declaration generation step still prints existing workspace type diagnostics for unresolved local packages.

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