Items which previously used charges are not grouped together inside a container

### Describe the bug


Quite spammy.

### Attach save file

n/a

### Steps to reproduce

1. Find e.g plastic bag with yeast in it.
2. Enjoy the pointless duplication of entries.

### Expected behavior

It would display as Yeast (x25) or something similar.

### Screenshots

_No response_

### Versions and configuration

- OS: Linux
- OS Version: LSB Version: n/a; Distributor ID: Arch; Description: Arch Linux; Release: rolling; Codename: n/a;
- Game Version: cdda-experimental-2024-04-23-1301 9251ce4 [64-bit]
- Graphics Version: Tiles
- Game Language: System language []
- Mods loaded: [
Dark Days Ahead [dda],
Disable NPC Needs [no_npc_food],
Portal Storms Ignore NPCs [personal_portal_storms],
Slowdown Fungal Growth [no_fungal_growth],
Sky Island [skyisland]
]

### Additional context

_No response_

No source file or test is named in the report. Start by reproducing the container inventory display with a plastic bag containing yeast, then trace the code responsible for grouping contained items and add a regression test. Done means identical items previously using charges appear as one grouped entry, such as Yeast (x25).

Written by the indexing model from the issue text.