Use appropriate icons for toasts (#4803)

* use appropriate icons for toasts

* use info for session expiry

* tweak size

* message -> safeMessage

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Co-authored-by: Samuel Newman <10959775+mozzius@users.noreply.github.com>

src/view/com/util/post-ctrls/PostCtrls.tsx

@@ -354,7 +354,7 @@ let PostCtrls = ({
           onPress={e => {
             e.stopPropagation()
             Clipboard.setStringAsync(feedContext)
-            Toast.show(_(msg`Copied to clipboard`))
+            Toast.show(_(msg`Copied to clipboard`), 'clipboard-check')
           }}>
           <Text
             style={{