Check validity first before loading instead of doing simultaneously

[gridhead]

While loading the artifact of a certain area, if a certain substat is invalid then it loads the artifact up partially before throwing the dialog box showing the error.

Here is the affected code which can be found here https://github.com/gridhead/gi-loadouts/blob/main/gi_loadouts/face/wind/fclt.py

for indx in ["main", "a", "b", "c", "d"]:
    dropname = getattr(self, f"arti_{part}_name_{indx}")
    dropdata = getattr(self, f"arti_{part}_data_{indx}")
    namelist = [dropname.itemText(roll) for roll in range(dropname.count())]
    if getattr(arti, f"stat_{indx}").stat_name.value in namelist:
        dropname.setCurrentText(getattr(arti, f"stat_{indx}").stat_name.value)
        if indx != "main":
            dropdata.setText(str(getattr(arti, f"stat_{indx}").stat_data))
    else:
        raise ValueError("Artifact stat cannot be identified.")

For a mistaken GOOD format file as follows,

{
  "id": "BA394BF0",
  "location": "",
  "lock": false,
  "setKey": "NoblesseOblige",
  "rarity": 5,
  "level": 20,
  "slotKey": "circlet",
  "mainStatKey": "heal_",
  "substats": [
    {
      "key": "heal_",
      "value": 12.0
    },
    {
      "key": "atk_",
      "value": 34.0
    },
    {
      "key": "critRate_",
      "value": 56.0
    },
    {
      "key": "critDMG_",
      "value": 78.0
    }
  ]
}

The following is the result,

See how the artifact has partially loaded before the dialog is shown.