Itemlist: Fix text_overrun when using fixed_icon_size

[havi05]

Fixes #102581 which is a regression from #101899 where I forgot to check for the fixed_icon_size.

[bruvzg]

Seems to be working as expected.

The icon_size is already calculated in the same function, so this can be simplified a bit:

diff --git a/scene/gui/item_list.cpp b/scene/gui/item_list.cpp
index 0613c70c11..8feacd4c2c 100644
--- a/scene/gui/item_list.cpp
+++ b/scene/gui/item_list.cpp
@@ -1282,10 +1282,8 @@ void ItemList::_notification(int p_what) {
 				}
 
 				Vector2 text_ofs;
+				Size2 icon_size;
 				if (items[i].icon.is_valid()) {
-					Size2 icon_size;
-					//= _adjust_to_max_size(items[i].get_icon_size(),fixed_icon_size) * icon_scale;
-
 					if (fixed_icon_size.x > 0 && fixed_icon_size.y > 0) {
 						icon_size = fixed_icon_size * icon_scale;
 					} else {
@@ -1401,11 +1399,6 @@ void ItemList::_notification(int p_what) {
 
 						items[i].text_buf->draw(get_canvas_item(), text_ofs, txt_modulate);
 					} else {
-						Size2 icon_size = items[i].get_icon_size() * icon_scale;
-						if (icon_size != Size2() && fixed_icon_size.x > 0 && fixed_icon_size.y > 0) {
-							icon_size = fixed_icon_size * icon_scale;
-						}
-
 						if (fixed_column_width > 0) {
 							size2.x = MIN(size2.x, fixed_column_width);
 						}

[Repiteo]

Thanks!