Update what's new banner to 0.7.0

[willeastcott]

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[changeset-bot]

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Latest commit: 2484d22

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[Copilot]

Pull Request Overview

Updates the promotional banner in the documentation site to announce the release of @playcanvas/react version 0.7.0, replacing the previous 0.4.2 version banner.

• Updated banner storage key from "0.5.0-release" to "0.7.0-release"
• Updated GitHub release link to point to v0.7.0 tag
• Updated displayed version number from 0.4.2 to 0.7.0

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[Copilot]

The storage key '0.7.0-release' doesn't match the actual version being promoted (0.7.0). This inconsistency could lead to confusion when managing banner dismissal state across different releases.

Suggested change

	banner={<Banner storageKey="0.7.0-release"><a href="https://github.com/playcanvas/react/releases/tag/v0.7.0" target="_blank" rel="noreferrer">
	banner={<Banner storageKey="0.7.0"><a href="https://github.com/playcanvas/react/releases/tag/v0.7.0" target="_blank" rel="noreferrer">

[pkg-pr-new]

Open in StackBlitz

npm i https://pkg.pr.new/@playcanvas/blocks@211

npm i https://pkg.pr.new/@playcanvas/react@211

commit: 2484d22