[UX Issue] Theme Selector on th website should close on press button again

[GeorgeWL]

Overview

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• Context, problem or idea, solution or next step

Personally the UX on the theme selctor is great, but there's one thing missing, that being if you click the opener whilst it's active, I feel like it should then clsoe it, currently only on click outside closes.

• Screenshots/Video (if possible)

Reproduction steps

• Click theme select opener (the easel)
• Wait for animation
• Attempt to close by Click theme select opener (the easel) - does nothing

Version number

• Found in CHANGELOG.md

Operating system and device

Related issues

• Type # and the issue number or # and select the from the inline drop down.

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