Include range of supported WebView versions about shared-docs HOT 5 OPEN

@Sdaswani Are numbers on the range of WebView versions we've seen in telemetry something we can reveal publicly (assuming we have that information)?

from shared-docs.

I think that’s fine @mcomella.

from shared-docs.

liuche also mentioned it seems fine to document but perhaps would not be useful. They suggested "min webview version that has % usage" is more useful (to avoid the case where one person is using an ancient version); or even top 30 webView versions (to avoid publishing explicit percentages).

from shared-docs.

We don't have a probe for this: I'm checking with the Rocket team, who has one, to see if they would mind us using their data.

from shared-docs.

Potential security risk: "target Firefox b/c their users tend to use outdated WebView versions".

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