fix(ui): lock screen clock no longer overlaps its own title bar

PR #32 added a title bar (battery + status icons) to the LOCK page but
its drawClockTime() call still started at top_y=0, same row the title
bar draws into -- renderBatteryIndicator() runs unconditionally for any
_page != CLOCK (LOCK included), only the node-name text is skipped for
LOCK specifically. Landscape panels could overlap the icon row whenever
enough status badges (BT/GPS/alarm/mute/advert/trail/repeater) are
active; portrait e-ink's huge size-4 HH/MM block (the only board shape
that hits drawClockTime()'s "tall" branch) is worst hit, since it's
designed to fill most of the narrow width. Starts at top_y=lh now,
clearing the title bar row, matching how every other non-CLOCK page
already reserves that space via content_y.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

examples/companion_radio/ui-new/UITask.cpp

@@ -938,7 +938,11 @@ public:
         struct tm* ti = gmtime(&t);
         char buf[12];
         bool h12 = _node_prefs && _node_prefs->clock_12h;
-        int date_y = drawClockTime(display, 0, ti, h12, /*show_sec*/false);
+        // top_y=lh, not 0: the title bar (battery + status icons, drawn above
+        // for every _page != CLOCK, LOCK included) already occupies row 0 --
+        // starting the clock there overlapped it, worst on portrait e-ink's
+        // huge (size-4) HH/MM block, which fills most of the narrow width.
+        int date_y = drawClockTime(display, lh, ti, h12, /*show_sec*/false);
         display.setTextSize(1);
         static const char* wd[] = {"Sun","Mon","Tue","Wed","Thu","Fri","Sat"};
         static const char* mo[] = {"Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec"};