Fix: footer game version and CDN label

The footer showed the game's full version with its build number and labelled the environment as "CDN".

Show only the part of the game version before the underscore (e.g. 11.20), and rename the "CDN" label to "Branch" since it shows the environment/branch the site was built from.

packages/website/src/components/Footer.astro

@@ -12,6 +12,7 @@ export interface Props {
 }
 
 const gameDefinitions = await api.gameDefinitions();
+const gameVersion = gameDefinitions.version.split("_")[0];
 const environment = assertSecret(import.meta.env.PUBLIC_ENVIRONMENT);
 const { locale } = Astro.props;
 const strings = getStrings(locale);
@@ -141,7 +142,7 @@ const strings = getStrings(locale);
           </Text>
         )
       }
-      <Text size="2" color="gray">CDN</Text>
+      <Text size="2" color="gray">Branch</Text>
     </Flex>
 
     <Flex direction="column" gap="1" flexGrow="1" flexBasis="0" align="start">
@@ -151,7 +152,7 @@ const strings = getStrings(locale);
       {
         environment !== "preview" && (
           <Code size="2" color="gray">
-            {gameDefinitions.version}
+            {gameVersion}
           </Code>
         )
       }
@@ -174,13 +175,13 @@ const strings = getStrings(locale);
             WoTB
           </Text>
           <Code size="2" color="gray">
-            {gameDefinitions.version}
+            {gameVersion}
           </Code>
         </>
       )
     }
 
-    <Text size="2" color="gray">CDN</Text>
+    <Text size="2" color="gray">Branch</Text>
     <Code size="2" color="gray">
       {environment}
     </Code>