Remove pointless suffixes on banner files.

I think someone just copied this pattern from the icons where the suffix
represented the icon size. These are definitely not 24px banners, and
some of the suffixes are even wrong (_25).

qt_ui/uiconstants.py

@@ -1,4 +1,5 @@
 import os
+from pathlib import Path
 from typing import Dict
 
 from PySide6.QtGui import QPixmap
@@ -215,12 +216,9 @@ def load_vehicle_icons():
             )
 
 
-def load_aircraft_banners():
-    for aircraft in os.listdir("./resources/ui/units/aircrafts/banners/"):
-        if aircraft.endswith(".jpg"):
-            AIRCRAFT_BANNERS[aircraft[:-7]] = QPixmap(
-                os.path.join("./resources/ui/units/aircrafts/banners/", aircraft)
-            )
+def load_aircraft_banners() -> None:
+    for path in Path().glob("resources/ui/units/aircrafts/banners/*.jpg"):
+        AIRCRAFT_BANNERS[path.stem] = QPixmap(path)
     variants = ["Mirage-F1CT", "Mirage-F1EE", "Mirage-F1M-EE", "Mirage-F1EQ"]
     for f1 in variants:
         AIRCRAFT_BANNERS[f1] = AIRCRAFT_BANNERS["Mirage-F1C-200"]
@@ -229,9 +227,6 @@ def load_aircraft_banners():
         AIRCRAFT_BANNERS[f1] = AIRCRAFT_BANNERS["Mirage-F1C"]
 
 
-def load_vehicle_banners():
-    for aircraft in os.listdir("./resources/ui/units/vehicles/banners/"):
-        if aircraft.endswith(".jpg"):
-            VEHICLE_BANNERS[aircraft[:-7]] = QPixmap(
-                os.path.join("./resources/ui/units/vehicles/banners/", aircraft)
-            )
+def load_vehicle_banners() -> None:
+    for path in Path().glob("resources/ui/units/vehicles/banners/*.jpg"):
+        VEHICLE_BANNERS[path.stem] = QPixmap(path)