[FIX] website_links: Crash when loading data more than a week old

Steps to reproduce the bug:
- Create old click data in the `link_tracker_click` table or change your computer's current date to two weeks in the future.
- Go to the stats page of the link tracker

Bug:
Backtrace on the stats of the link tracker.

opw:2321377

closes odoo/odoo#58113

X-original-commit: 875aeb5c55b96fc3f7d76fc67d56f60df8453ec3
Signed-off-by: Simon Goffin (sig) <sig@openerp.com>
Signed-off-by: backspac <backspac@users.noreply.github.com>

addons/website_links/i18n/website_links.pot

@@ -179,6 +179,13 @@ msgstr ""
 msgid "Newest"
 msgstr ""
 
+#. module: website_links
+#. openerp-web
+#: code:addons/website_links/static/src/js/website_links_charts.js:0
+#, python-format
+msgid "No data"
+msgstr ""
+
 #. module: website_links
 #: model_terms:ir.ui.view,arch_db:website_links.create_shorten_url
 msgid "Recently Used"

addons/website_links/static/src/js/website_links_charts.js

@@ -104,7 +104,7 @@ var PieChart = publicWidget.Widget.extend({
                 labels: labels,
                 datasets: [{
                     data: data,
-                    label: this.data[0].key,
+                    label: this.data.length > 0 ? this.data[0].key : _t('No data'),
                 }]
             },
         };