Display server error message on server list (#1741)

## Description
On the switch server page, display error message at the bottom for the
focused server. This includes unsupported server version.

### Related issues
Jellyfin 10.11/12.0 support discussion: #1640

### Testing
Emulator

## Screenshots
<img width="1280" height="720" alt="server_error Large"
src="https://github.com/user-attachments/assets/1227e7e7-a364-48d9-9a77-cb3f78d134a1"
/>

## AI or LLM usage
None

app/src/main/java/com/github/damontecres/wholphin/WholphinApplication.kt

@@ -15,6 +15,8 @@ import org.acra.ReportField
 import org.acra.config.dialog
 import org.acra.data.StringFormat
 import org.acra.ktx.initAcra
+import org.jellyfin.sdk.Jellyfin
+import org.jellyfin.sdk.model.ServerVersion
 import timber.log.Timber
 import javax.inject.Inject
 
@@ -120,5 +122,7 @@ class WholphinApplication :
     companion object {
         lateinit var instance: WholphinApplication
             private set
+
+        val minimumServerVersion: ServerVersion = Jellyfin.minimumVersion
     }
 }