Opening an unread article when offline causes an error screen with google reader backend

Could be changed to just a little banner on top saying we're online so syncing can't happen

Environment

Version: 0.11.1
Device: samsung SM-A736B
System: Android 14 (API 34)

Stack trace:

java.net.UnknownHostException: Unable to resolve host "reader.interfree.ca": No address associated with hostname
	at java.net.Inet6AddressImpl.lookupHostByName(Inet6AddressImpl.java:156)
	at java.net.Inet6AddressImpl.lookupAllHostAddr(Inet6AddressImpl.java:103)
	at java.net.InetAddress.getAllByName(InetAddress.java:1152)
	at okhttp3.Dns$Companion$DnsSystem.lookup(Dns.kt:6)
	at okhttp3.internal.connection.RealRoutePlanner.plan(RealRoutePlanner.kt:469)
	at okhttp3.internal.connection.FastFallbackExchangeFinder.launchTcpConnect(FastFallbackExchangeFinder.kt:10)
	at okhttp3.internal.connection.FastFallbackExchangeFinder.find(FastFallbackExchangeFinder.kt:61)
	at okhttp3.internal.connection.ConnectInterceptor.intercept(ConnectInterceptor.kt:32)
	at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.kt:126)
	at okhttp3.internal.cache.CacheInterceptor.intercept(CacheInterceptor.kt:1015)
	at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.kt:126)
	at okhttp3.internal.http.BridgeInterceptor.intercept(BridgeInterceptor.kt:139)
	at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.kt:126)
	at okhttp3.internal.http.RetryAndFollowUpInterceptor.intercept(RetryAndFollowUpInterceptor.kt:174)
	at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.kt:126)
	at okhttp3.internal.connection.RealCall.getResponseWithInterceptorChain$okhttp(RealCall.kt:96)
	at okhttp3.internal.connection.RealCall$AsyncCall.run(RealCall.kt:48)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:644)
	at java.lang.Thread.run(Thread.java:1012)
	Suppressed: kotlinx.coroutines.internal.DiagnosticCoroutineContextException: [StandaloneCoroutine{Cancelling}@c2fd8b7, Dispatchers.IO]
Caused by: android.system.GaiException: android_getaddrinfo failed: EAI_NODATA (No address associated with hostname)
	at libcore.io.Linux.android_getaddrinfo(Native Method)
	at libcore.io.ForwardingOs.android_getaddrinfo(ForwardingOs.java:133)
	at libcore.io.BlockGuardOs.android_getaddrinfo(BlockGuardOs.java:222)
	at libcore.io.ForwardingOs.android_getaddrinfo(ForwardingOs.java:133)
	at java.net.Inet6AddressImpl.lookupHostByName(Inet6AddressImpl.java:135)
	... 19 more

Start by reproducing the failure when opening an unread article offline with the Google Reader backend, using the reported UnknownHostException as the entry point. Trace how this network error reaches the article screen; done means the offline case shows a small connectivity/sync banner instead of an error screen.