Label "popover" as Baseline Newly available

[kosamari]

Popover (https://webstatus.dev/features/popover) is supported by all browsers and should be listed as Baseline Newly available (currently labeled as "limited")

[jcscottiii]

Hi @kosamari!

We consume what is provided by the web-features repo. Currently, they mark baseline as false. Can you make an issue there? Once you do, we'll close this one.

cc: @atopal @ddbeck

[ddbeck]

For background, mdn/browser-compat-data recently marked HTMLElement.popover as partially-implemented, due to popovers being undismissable in some circumstances in Safari on iOS. Apparently, this bug has been around since popover shipped in Safari. See:

• https://developer.mozilla.org/en-US/docs/Web/API/HTMLElement/popover#browser_compatibility
• https://github.com/mdn/browser-compat-data/issues/22927
• https://bugs.webkit.org/show_bug.cgi?id=267688