feat: Change factory icons from circles to hexagons (#4439)

Resolves #4413 

## Description:

The factory and city icons are currently undistinguishable when zooming
out, this PR changes the factory icon to be hexagon-shaped.

It also increases the icon scale (now equal to port) to put some padding
around.

*Before*
<img width="159" height="154" alt="Before"
src="https://github.com/user-attachments/assets/2967fbc1-c775-4281-9592-6a52cbadd5a4"
/>

*After (with `scale = 1.0`)*
<img width="133" height="135" alt="After (with `scale = 1.0`)"
src="https://github.com/user-attachments/assets/f2bb9d8a-2f41-434a-b4df-9c1475f51cce"
/>

*After (with `scale = 1.08`)*
<img width="192" height="191" alt="After (with `scale = 1.08`)"
src="https://github.com/user-attachments/assets/c81026d2-f6fe-4115-a00e-e7490d342787"
/>

## Please complete the following:

- [X] I have added screenshots for all UI updates
- [X] I process any text displayed to the user through translateText()
and I've added it to the en.json file
- [X] I have added relevant tests to the test directory

## Please put your Discord username so you can be contacted if a bug or
regression is found:

lents

src/client/render/gl/render-settings.json

@@ -134,7 +134,7 @@
         "iconFill": 0.85
       },
       "Factory": {
-        "scale": 1,
+        "scale": 1.08,
         "iconFill": 0.85
       },
       "Defense Post": {