RSS Autodiscovery popup bugs

[mattmcalister]

Description

1. Incorrect icon showing in address bar when visiting a site that is not in the sources list
2. Empty follow button when not following a feed until you mouseover the button
3. Sometimes the icon doesn't appear at all

Steps to Reproduce

1. Visit theregister.com
2. Click the old RSS autodiscovery icon
3. Mouseover the follow buttons
4. Visit infoworld.com or towardsdatascience.com
5. No RSS autodiscovery icon
6. View page source to find the RSS feed

Example

[stephendonner]

@fallaciousreasoning @petemill can we please get this uplifted to 1.46.x?

[kjozwiak]

The above requires 1.46.97 or higher for 1.46.x verification 👍

[stephendonner]

Verified PASSED using

Brave	1.46.97 Chromium: 107.0.5304.91 (Official Build) beta (x86_64)
Revision	3d5948960d62418160796d5831a4d2d7d6c90fa8-refs/branch-heads/5304@{#1097}
OS	macOS Version 13.1 (Build 22C5033e)

Steps:

1. installed 1.46.97
2. launched Brave
3. opened brave://flags
4. set both Brave News v2 and Brave News Subscribe button to Enabled
5. clicked on Relaunch
6. loaded infoworld.com and towardsdatascience.com
7. for each, clicked on the Manage Subscriptions icon in the URL bar
8. ensured I could Follow each
9. opened the Customize News dialog
10. ensured they were listed
11. opened the Brave News feed on a new-tab page

infoworld.com

1	2	3	4

towardsdatascience.com

1	2	3	4