Fix icons and add mirv to build bar (#2154)

## Description:

Fix blurry icons and add mirv to build bar
<img width="792" height="101" alt="image"
src="https://github.com/user-attachments/assets/a46c4724-c99b-4541-b56b-92ec662c8ec5"
/>

<img width="176" height="275" alt="image"
src="https://github.com/user-attachments/assets/dbcd2ed4-0f21-4065-9a52-9b16e9043270"
/>


## 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
- [x] I confirm I have thoroughly tested these changes and take full
responsibility for any bugs introduced

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

DISCORD_USERNAME

src/client/UserSettingModal.ts

@@ -494,11 +494,20 @@ export class UserSettingModal extends LitElement {
         @change=${this.handleKeybindChange}
       ></setting-keybind>
 
+      <setting-keybind
+        action="buildWarship"
+        label=${translateText("user_setting.build_warship")}
+        description=${translateText("user_setting.build_warship_desc")}
+        defaultKey="Digit7"
+        .value=${this.keybinds["buildWarship"]?.key ?? ""}
+        @change=${this.handleKeybindChange}
+      ></setting-keybind>
+
       <setting-keybind
         action="buildAtomBomb"
         label=${translateText("user_setting.build_atom_bomb")}
         description=${translateText("user_setting.build_atom_bomb_desc")}
-        defaultKey="Digit7"
+        defaultKey="Digit8"
         .value=${this.keybinds["buildAtomBomb"]?.key ?? ""}
         @change=${this.handleKeybindChange}
       ></setting-keybind>
@@ -507,17 +516,17 @@ export class UserSettingModal extends LitElement {
         action="buildHydrogenBomb"
         label=${translateText("user_setting.build_hydrogen_bomb")}
         description=${translateText("user_setting.build_hydrogen_bomb_desc")}
-        defaultKey="Digit8"
+        defaultKey="Digit9"
         .value=${this.keybinds["buildHydrogenBomb"]?.key ?? ""}
         @change=${this.handleKeybindChange}
       ></setting-keybind>
 
       <setting-keybind
-        action="buildWarship"
-        label=${translateText("user_setting.build_warship")}
-        description=${translateText("user_setting.build_warship_desc")}
-        defaultKey="Digit9"
-        .value=${this.keybinds["buildWarship"]?.key ?? ""}
+        action="buildMIRV"
+        label=${translateText("user_setting.build_MIRV")}
+        description=${translateText("user_setting.build_MIRV_desc")}
+        defaultKey="Digit0"
+        .value=${this.keybinds["buildMIRV"]?.key ?? ""}
         @change=${this.handleKeybindChange}
       ></setting-keybind>