NEO-24: fix HUD overlap between PlayerPositionLabel and TargetLockLabel

PlayerPositionLabel's 3 lines at font_size=15 + outline=6 overran its
64 px rect, so TargetLockLabel (offset_top=82) rendered the `Target:`
row on top of the `z:` row. Bump position-label bottom to 88 and push
target-label top to 104 for clean separation; widen target-label rect to
320x120 so the optional 4th `Denied: <reasonCode>` line fits without
clipping.

client/scenes/main.tscn

@@ -1133,7 +1133,7 @@ autowrap_mode = 3
 offset_left = 8.0
 offset_top = 8.0
 offset_right = 220.0
-offset_bottom = 72.0
+offset_bottom = 88.0
 grow_horizontal = 0
 grow_vertical = 0
 theme_override_colors/font_color = Color(0.92, 0.95, 0.98, 1)
@@ -1146,9 +1146,9 @@ z: —"
 
 [node name="TargetLockLabel" type="Label" parent="UICanvas" unique_id=9000004]
 offset_left = 8.0
-offset_top = 82.0
-offset_right = 280.0
-offset_bottom = 150.0
+offset_top = 104.0
+offset_right = 320.0
+offset_bottom = 224.0
 grow_horizontal = 0
 grow_vertical = 0
 theme_override_colors/font_color = Color(0.86, 0.94, 1, 1)