Support forma unicode chars con url

Checklist

• I've already searched in existing issues and haven't found a similar problem reported.
• I'm using the latest version of the app
• This error caused the app to crash
• This error is reproducible

Which category best fits this error?

Feed Management

App version

0.14.4

Reproduction steps

1. Create a local account
2. Add the next url and clicking search: 'マリウス.com'

Log:
Version: 0.14.4
Device: samsung SM-G781B
System: Android 13 (API 33)

Stack trace: 

.lang.IllegalArgumentException: Unexpected char 0x30de at 0 in Referer value: マリウス.com
	at okhttp3.internal._HeadersCommonKt.headersCheckValue(-HeadersCommon.kt:123)
	at okhttp3.Headers$Builder.add(Headers.kt:15)
	at me.ash.reader.ui.component.base.RYAsyncImageKt.RYAsyncImage(RYAsyncImage.kt:444)
	at me.ash.reader.ui.component.FeedIconKt.FeedIcon-hGBTI10(FeedIcon.kt:316)
	at me.ash.reader.ui.page.home.feeds.subscribe.SubscribeDialogKt.SubscribeDialog$lambda$19(SubscribeDialog.kt:51)
	at me.ash.reader.ui.page.home.feeds.subscribe.SubscribeDialogKt.$r8$lambda$fraKeqMjbSXJ3ebaMgjNu3sq8Us(SubscribeDialog.kt:1)
	at me.ash.reader.ui.page.home.feeds.subscribe.SubscribeDialogKt$$ExternalSyntheticLambda12.invoke(R8$$SyntheticClass:11)
	at androidx.compose.runtime.internal.ComposableLambdaImpl.invoke(ComposableLambda.kt:11)
	at androidx.compose.runtime.internal.ComposableLambdaImpl$invoke$1.invoke(ComposableLambda.kt:13)
	at androidx.compose.runtime.ComposerImpl.recomposeToGroupEnd(Composer.kt:551)
	at androidx.compose.runtime.ComposerImpl.skipCurrentGroup(Composer.kt:161)
	at androidx.compose.runtime.ComposerImpl.doCompose-aFTiNEg(Composer.kt:124)
	at androidx.compose.runtime.CompositionImpl.recompose(Composition.kt:74)
	at androidx.compose.runtime.Recomposer.performRecompose(Recomposer.kt:68)
	at androidx.compose.runtime.Recomposer$runRecomposeAndApplyChanges$2$$ExternalSyntheticLambda0.invoke(R8$$SyntheticClass:588)
	at androidx.compose.ui.platform.AndroidUiFrameClock$withFrameNanos$2$callback$1.doFrame(AndroidUiFrameClock.android.kt:7)
	at androidx.compose.ui.platform.AndroidUiDispatcher$dispatchCallback$1.doFrame(AndroidUiDispatcher.android.kt:48)
	at android.view.Choreographer$CallbackRecord.run(Choreographer.java:1299)
	at android.view.Choreographer$CallbackRecord.run(Choreographer.java:1309)
	at android.view.Choreographer.doCallbacks(Choreographer.java:923)
	at android.view.Choreographer.doFrame(Choreographer.java:847)
	at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:1283)
	at android.os.Handler.handleCallback(Handler.java:942)
	at android.os.Handler.dispatchMessage(Handler.java:99)
	at android.os.Looper.loopOnce(Looper.java:226)
	at android.os.Looper.loop(Looper.java:313)
	at android.app.ActivityThread.main(ActivityThread.java:8762)
	at java.lang.reflect.Method.invoke(Native Method)
	at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:604)
	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1067)
	Suppressed: kotlinx.coroutines.internal.DiagnosticCoroutineContextException: [androidx.compose.runtime.PausableMonotonicFrameClock@543a480, androidx.compose.ui.platform.MotionDurationScaleImpl@4ec3ab9, StandaloneCoroutine{Cancelling}@68f8efe, AndroidUiDispatcher@f25765f]

Start with RYAsyncImage.kt at the failing line, then trace how FeedIcon.kt and SubscribeDialog.kt pass the entered URL during the search flow. Reproduce the crash with the Unicode URL マリウス.com; done means the feed search and icon loading no longer crash for that input.