Dolphin's "Size" column counts two extra items when a directory has 200 or more entries. The Information panel shows the correct number of items.

Steps to reproduce:
1. Create a directory with 199 empty files (for example using `mkdir -p ~/tmp/repro_199 && seq -w 199 | xargs -I{} touch ~/tmp/repro_199/f_{}`).
2. Create another directory with 200 empty files (`mkdir -p ~/tmp/repro_200 && seq -w 200 | xargs -I{} touch ~/tmp/repro_200/f_{}`).
3. Open the parent directory containing these folders in Dolphin and switch to Details view so the Size column shows the number of items.
4. Note that `repro_199` shows 199 items in both the Size column and the Information panel.
5. Note that `repro_200` shows 202 items in the Size column but 200 items in the Information panel. Similarly, a directory with 331 files shows 333 items in the Size column and 331 in the Information panel.

Expected behaviour:
The Size column should report the actual number of items, consistent with the Information panel and `find -maxdepth 1` output.

Additional information:
- OS: Arch Linux (Plasma 6) as of September 2025.
- Dolphin version: current Arch package.
- The bug is not related to hidden files or the '.'/ '..' entries, since it occurs with plain directories containing only regular files.
- The threshold appears to be exactly 200 entries; directories with fewer than 200 files are counted correctly.