Duplicate Widgets rendering on page

[joepavitt]

Description

From: #472 (comment)

After updating to 0.11.3, I'm seeing that there is not documentation on what the widget scoping does or how to configure it, which is problematic. This is considered a breaking change that does not default to previously expected behaviour. One of my pages is showing widgets from other pages also included now. The only way to correct this is to change the scope setting and then select the group scope option again and redeploy. The biggest issue though is lack of documentation on what the different scopes do (in a node-red fashion)

Epic/Story

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