Fix error reporting & crash during Jellyseerr login (#802)

## Description
Makes sure the invalid credentials error is propagated up instead of
displaying "No URL" as the error message.

Makes sure `OkHttp` is initialized since the startup initialization
provider is disabled. This fixes a possible crash if `OkHttp` needs to
access its assets.

Also, shows the URL when removing the Jellyseerr server.

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

@@ -10,6 +10,7 @@ import androidx.compose.runtime.ExperimentalComposeRuntimeApi
 import androidx.hilt.work.HiltWorkerFactory
 import androidx.work.Configuration
 import dagger.hilt.android.HiltAndroidApp
+import okhttp3.OkHttp
 import org.acra.ACRA
 import org.acra.ReportField
 import org.acra.config.dialog
@@ -63,6 +64,7 @@ class WholphinApplication :
 
     override fun onCreate() {
         super.onCreate()
+        OkHttp.initialize(this)
         initAcra {
             buildConfigClass = BuildConfig::class.java
             reportFormat = StringFormat.JSON