ActivityNotFoundException for CHOOSER intent when adding contact remotely
* Android version: 14
* Phone model: Google Pixel 6
* Briar version: 1.5.4 (7d76171)
Stacktrace:
```
android.content.ActivityNotFoundException: No Activity found to handle Intent { act=android.intent.action.CHOOSER (has extras) }
at android.app.Instrumentation.checkStartActivityResult(Instrumentation.java:2239)
at android.app.Instrumentation.execStartActivity(Instrumentation.java:1878)
at android.app.Activity.startActivityForResult(Activity.java:5589)
at androidx.activity.ComponentActivity.startActivityForResult(ComponentActivity.java:712)
at android.app.Activity.startActivityForResult(Activity.java:5547)
at androidx.activity.ComponentActivity.startActivityForResult(ComponentActivity.java:693)
at android.app.Activity.startActivity(Activity.java:6045)
at android.app.Activity.startActivity(Activity.java:6012)
at androidx.core.app.ShareCompat$IntentBuilder.startChooser(ShareCompat.java:436)
at org.briarproject.briar.android.contact.add.remote.LinkExchangeFragment.lambda$onHandshakeLinkLoaded$2(LinkExchangeFragment.java:123)
at org.briarproject.briar.android.contact.add.remote.LinkExchangeFragment.$r8$lambda$rc2OESX5RIoUPUdisIlqrX1uomc(Unknown Source:0)
at org.briarproject.briar.android.contact.add.remote.LinkExchangeFragment$$ExternalSyntheticLambda3.onClick(Unknown Source:4)
at android.view.View.performClick(View.java:7659)
at android.view.View.performClickInternal(View.java:7636)
at android.view.View.-$$Nest$mperformClickInternal(Unknown Source:0)
at android.view.View$PerformClick.run(View.java:30155)
at android.os.Handler.handleCallback(Handler.java:958)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loopOnce(Looper.java:205)
at android.os.Looper.loop(Looper.java:294)
at android.app.ActivityThread.main(ActivityThread.java:8176)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:552)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:971)
```
Puzzling, but easy to catch.
issue