Add ability to tab to DuplicateLink (#2646)

* Add ability to tab to DuplicateLink

The change that allows the DuplicateLink to be tabbed to is the removal of the `tabindex`. The other changes are to make the link only appear as wide as the text, otherwise the tab outline appears around the whole `<span>`, which makes it look weird.

* Fix formatting after attribute removal

CONTRIBUTORS

@@ -136,6 +136,7 @@ Marko Juhanne <github.com/mjuhanne>
 Gabriel Heinatz <anorot@gmail.com>
 Monty Evans <montyevans@gmail.com>
 Nil Admirari <https://github.com/nihil-admirari>
+Michael Winkworth <github.com/SteelColossus>
 
 ********************
 

ts/editor/DuplicateLink.svelte

@@ -7,19 +7,19 @@ License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
     import * as tr from "@tslib/ftl";
 </script>
 
-<a
-    class="duplicate-link"
-    href="/#"
-    tabindex="-1"
-    on:click={() => bridgeCommand("dupes")}
->
+<span class="duplicate-link-container">
+    <a class="duplicate-link" href="/#" on:click={() => bridgeCommand("dupes")}>
         {tr.editingShowDuplicates()}
     </a>
+</span>
 
 <style lang="scss">
-    .duplicate-link {
-        color: var(--highlight-color);
+    .duplicate-link-container {
         text-align: center;
         flex-grow: 1;
     }
+
+    .duplicate-link {
+        color: var(--highlight-color);
+    }
 </style>