[FIX] web: adjust hatched events for planning

Prior to this commit, the "hatched" event style in Planning wasn't
displayed in Day and Week views.
This commit adjusts the css selector to fix this issue.

task-3617329
Part of task-3575827

closes #159317

X-original-commit: e916330
Signed-off-by: Pierre Paridans (app) <app@odoo.com>

addons/web/static/src/views/calendar/calendar_renderer.scss

@@ -637,7 +637,10 @@
                 --fc-bg-event-color: #{$color-subtle};
             }
 
-            &.o_event_hatched:not(.o_event_dot):not(.fc-day-grid-event), &.o_event_hatched.fc-day-grid-event .fc-bg, &.o_attendee_status_tentative:not(.o_event_dot) .fc-bg {
+            &.o_event_hatched:has(.fc-bg), &.o_attendee_status_tentative:has(.fc-bg) {
+                --fc-event-bg-color: #{$o-view-background-color};
+            }
+            &.o_event_hatched:not(.o_event_dot):not(.fc-daygrid-event):not(.fc-timegrid-event), &.o_event_hatched .fc-bg, &.o_attendee_status_tentative:not(.o_event_dot) .fc-bg {
                 background: repeating-linear-gradient(
                     45deg,
                     RGBA(to-rgb($color), .3),