Update hashtag menu to use Menu, convert to native link for additional a11y and click handling (#7529)

* Make tag a normal link on web

* Replace old TagMenu with new RichTextTag component, expand and improve click utils

* Clarify intents

* Ensure we're passing down hint

* ope

* DRY

src/platform/urls.tsx

@@ -1,4 +1,4 @@
-import {GestureResponderEvent, Linking} from 'react-native'
+import {Linking} from 'react-native'
 
 import {isNative, isWeb} from './detection'
 
@@ -24,15 +24,3 @@ export function clearHash() {
     window.location.hash = ''
   }
 }
-
-export function shouldClickOpenNewTab(e: GestureResponderEvent) {
-  /**
-   * A `GestureResponderEvent`, but cast to `any` to avoid using a bunch
-   * of @ts-ignore below.
-   */
-  const event = e as any
-  const isMiddleClick = isWeb && event.button === 1
-  const isMetaKey =
-    isWeb && (event.metaKey || event.altKey || event.ctrlKey || event.shiftKey)
-  return isMetaKey || isMiddleClick
-}