Fix channel links being filtered by Staked Level

## Issue
Channel links were showing the "This channel isn't staking enough LBRY Credits for link previews." -- channel links shouldn't be showing previews in the first place.

## Change
Moved the logic into `ClaimLink`, which is the better place to put it anyway. I think I was trying to not touch as many components as possible (i.e. not passing `allowPreview` down too many layers) in the initial implementation. This caused the `isChannel` consideration to be missed.

ui/component/claimLink/view.jsx

@@ -5,6 +5,7 @@ import EmbedPlayButton from 'component/embedPlayButton';
 import Button from 'component/button';
 import UriIndicator from 'component/uriIndicator';
 import { INLINE_PLAYER_WRAPPER_CLASS } from 'component/fileRenderFloating/view';
+import { SIMPLE_SITE } from 'config';
 
 type Props = {
   uri: string,
@@ -12,7 +13,7 @@ type Props = {
   children: React.Node,
   description: ?string,
   isResolvingUri: boolean,
-  doResolveUri: string => void,
+  doResolveUri: (string) => void,
   blackListedOutpoints: Array<{
     txid: string,
     nout: number,
@@ -20,6 +21,7 @@ type Props = {
   playingUri: ?PlayingUri,
   parentCommentId?: string,
   isMarkdownPost?: boolean,
+  allowPreview: boolean,
 };
 
 class ClaimLink extends React.Component<Props> {
@@ -29,6 +31,7 @@ class ClaimLink extends React.Component<Props> {
     thumbnail: null,
     description: null,
     isResolvingUri: false,
+    allowPreview: false,
   };
 
   componentDidMount() {
@@ -46,7 +49,7 @@ class ClaimLink extends React.Component<Props> {
       let blackListed = false;
 
       blackListed = blackListedOutpoints.some(
-        outpoint =>
+        (outpoint) =>
           (signingChannel && outpoint.txid === signingChannel.txid && outpoint.nout === signingChannel.nout) ||
           (outpoint.txid === claim.txid && outpoint.nout === claim.nout)
       );
@@ -63,7 +66,16 @@ class ClaimLink extends React.Component<Props> {
   };
 
   render() {
-    const { uri, claim, children, isResolvingUri, playingUri, parentCommentId, isMarkdownPost } = this.props;
+    const {
+      uri,
+      claim,
+      children,
+      isResolvingUri,
+      playingUri,
+      parentCommentId,
+      isMarkdownPost,
+      allowPreview,
+    } = this.props;
     const isUnresolved = (!isResolvingUri && !claim) || !claim;
     const isBlacklisted = this.isClaimBlackListed();
     const isPlayingInline =
@@ -81,7 +93,7 @@ class ClaimLink extends React.Component<Props> {
 
     return isChannel ? (
       <UriIndicator uri={uri} link />
-    ) : (
+    ) : allowPreview ? (
       <div className={classnames('claim-link')}>
         <div
           className={classnames({
@@ -92,6 +104,14 @@ class ClaimLink extends React.Component<Props> {
         </div>
         <Button button="link" className="preview-link__url" label={uri} navigate={uri} />
       </div>
+    ) : (
+      <Button
+        button="link"
+        title={SIMPLE_SITE ? __("This channel isn't staking enough LBRY Credits for link previews.") : children}
+        label={children}
+        className="button--external-link"
+        navigate={uri}
+      />
     );
   }
 }

ui/component/markdownLink/view.jsx

@@ -1,5 +1,5 @@
 // @flow
-import { KNOWN_APP_DOMAINS, SIMPLE_SITE } from 'config';
+import { KNOWN_APP_DOMAINS } from 'config';
 import * as ICONS from 'constants/icons';
 import * as React from 'react';
 import { isURIValid } from 'lbry-redux';
@@ -43,7 +43,6 @@ function MarkdownLink(props: Props) {
   // Regex for url protocol
   const protocolRegex = new RegExp('^(https?|lbry|mailto)+:', 'i');
   const protocol = href ? protocolRegex.exec(href) : null;
-  const isLbryLink = href.startsWith('lbry://');
 
   let linkUrlObject;
   try {
@@ -98,30 +97,23 @@ function MarkdownLink(props: Props) {
       />
     );
   } else if (!simpleLinks && ((protocol && protocol[0] === 'lbry:' && isURIValid(decodedUri)) || lbryUrlFromLink)) {
-    element = allowPreview ? (
+    element = (
       <ClaimLink
         uri={lbryUrlFromLink || decodedUri}
         autoEmbed={embed}
         parentCommentId={parentCommentId}
         isMarkdownPost={isMarkdownPost}
+        allowPreview={allowPreview}
       >
         {children}
       </ClaimLink>
-    ) : (
-      <Button
-        button="link"
-        iconRight={isLbryLink ? undefined : ICONS.EXTERNAL}
-        title={SIMPLE_SITE ? __("This channel isn't staking enough LBRY Credits for link previews.") : children}
-        label={children}
-        className="button--external-link"
-        navigate={isLbryLink ? href : undefined}
-        href={isLbryLink ? undefined : href}
-      />
     );
   } else if (
     simpleLinks ||
     (protocol && (protocol[0] === 'http:' || protocol[0] === 'https:' || protocol[0] === 'mailto:'))
   ) {
+    const isLbryLink = href.startsWith('lbry://');
+
     element = (
       <Button
         button="link"