Force LTR layout for Gantt table in RTL locales (#43678).

Some Gantt features (column resizing, relation lines, progress line) do not work correctly in RTL yet. As a workaround, Gantt is always rendered in LTR even when the current locale is RTL.

Patch by Go MAEDA (user:maeda).


git-svn-id: https://svn.redmine.org/redmine/trunk@24385 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/assets/stylesheets/gantt.css

@@ -22,6 +22,8 @@
 table.gantt-table {
   inline-size: 100%;
   border-collapse: collapse;
+  /* Force LTR for Gantt even in RTL locales because column resizing, relation lines, and the progress line don't work in RTL yet. */
+  direction: ltr;
 }
 
 table.gantt-table td {
@@ -248,9 +250,11 @@ td.gantt_watcher_users_column div.issue_watcher_users ul li:not(:last-child)::af
   margin-block-start: 1px;
 }
 
+/* RTL adjustment (disabled while Gantt is forced LTR).  Enable when RTL is supported.
 [dir="rtl"] :is(.marker, .task.parent.marker) {
   background-position: right;
 }
+*/
 
 .version-behind-schedule a,
 .issue-behind-schedule a {