PolyGerrit: Fix gr-ssh-editor

When you clicked on the key in the columns

"Algorithm"

"Public key"

"Comment"

they showed blank. No data was being populated.

This fixes the issue.

Bug: Issue 7400
Change-Id: If98d09be4e023e519fbbce4f1f9cfae7df401de9
diff --git a/polygerrit-ui/app/elements/settings/gr-ssh-editor/gr-ssh-editor.js b/polygerrit-ui/app/elements/settings/gr-ssh-editor/gr-ssh-editor.js
index d5067aa..328d3d9 100644
--- a/polygerrit-ui/app/elements/settings/gr-ssh-editor/gr-ssh-editor.js
+++ b/polygerrit-ui/app/elements/settings/gr-ssh-editor/gr-ssh-editor.js
@@ -58,7 +58,8 @@
     },
 
     _showKey(e) {
-      const index = parseInt(e.target.getAttribute('data-index'), 10);
+      const el = e.currentTarget;
+      const index = parseInt(el.getAttribute('data-index'), 10);
       this._keyToView = this._keys[index];
       this.$.viewKeyOverlay.open();
     },
@@ -68,7 +69,8 @@
     },
 
     _handleDeleteKey(e) {
-      const index = parseInt(e.target.getAttribute('data-index'), 10);
+      const el = e.currentTarget;
+      const index = parseInt(el.getAttribute('data-index'), 10);
       this.push('_keysToRemove', this._keys[index]);
       this.splice('_keys', index, 1);
       this.hasUnsavedChanges = true;