Bug 1825927 - Fix inconsistencies in taskcluster/docker/thunderbird-flatpak/org.mozilla.Thunderbird.appdata.xml.in. r=rjl

Differential Revision: https://phabricator.services.mozilla.com/D174945

--HG--
extra : moz-landing-system : lando

taskcluster/docker/thunderbird-flatpak/org.mozilla.Thunderbird.appdata.xml.in

@@ -46,6 +46,17 @@
     <category>Office</category>
   </categories>
 
+  <provides>
+    <mediatype>message/rfc822</mediatype>
+    <mediatype>x-scheme-handler/mailto</mediatype>
+    <mediatype>text/calendar</mediatype>
+    <mediatype>text/vcard</mediatype>
+    <mediatype>text/x-vcard</mediatype>
+    <mediatype>x-scheme-handler/webcal</mediatype>
+    <mediatype>x-scheme-handler/webcals</mediatype>
+    <mediatype>x-scheme-handler/mid</mediatype>
+  </provides>
+
   <content_rating type="oars-1.1" />
   <url type="homepage">https://www.thunderbird.net/</url>
   <url type="bugtracker">https://bugzilla.mozilla.org/</url>

taskcluster/docker/thunderbird-flatpak/org.mozilla.Thunderbird.desktop

@@ -58,7 +58,7 @@ Terminal=false
 Type=Application
 Icon=org.mozilla.Thunderbird
 Categories=Network;Email;
-MimeType=message/rfc822;x-scheme-handler/mailto;application/x-xpinstall;
+MimeType=message/rfc822;x-scheme-handler/mailto;text/calendar;text/vcard;text/x-vcard;x-scheme-handler/webcal;x-scheme-handler/webcals;x-scheme-handler/mid;
 StartupNotify=true
 Actions=ComposeMessage;OpenAddressBook;