ReadHistory: On remove, trust the index from FileManagerHistory if possible (#12253)

The item's idx field is based on the current view settings, so only trust it when there's no filtering or searches involved, which ensures the order matches the actual history array layout.

frontend/apps/filemanager/filemanagerhistory.lua

@@ -207,7 +207,12 @@ function FileManagerHistory:onMenuHold(item)
             text = _("Remove from history"),
             callback = function()
                 UIManager:close(self.histfile_dialog)
-                require("readhistory"):removeItem(item)
+                -- The item's idx field is tied to the current *view*, so we can only pass it as-is when there's no filtering *at all* involved.
+                local index = item.idx
+                if self._manager.search_string or self._manager.selected_colections or self._manager.filter ~= "all" then
+                    index = nil
+                end
+                require("readhistory"):removeItem(item, index)
                 self._manager:updateItemTable()
             end,
         },