Remove rxjava from API calls used by AccountViewModel::changeRelationship() (#3008)

* Remove rxjava from API calls used by AccountListFragment

* Remove rxjava from API calls used by AccountViewModel::changeRelationship()

The affected API functions are also called from

- ReportViewModel.kt
- SearchViewModel.kt
- AccountListFragment.kt
- SFragment.java
- TimelineCases.kt

so they have also been updated.

This change requires bridging from Java code to Kotlin `suspend` functions,
by creating wrappers for the `mute` and `block` functions that can be
called from Java and create a coroutine scope.

I've deliberately made this fairly ugly so that it sticks out and can be
removed later.

* Use "Throwable" type and name

* Delete 46.json

Not sure where this came from.

* Emit log messages with the correct tag

* Add another log tag, and lint

* Move viewModelScope.launch in to changeRelationshop()

app/src/main/java/com/keylesspalace/tusky/fragment/SFragment.kt

@@ -62,8 +62,6 @@ import com.keylesspalace.tusky.view.showMuteAccountDialog
 import com.keylesspalace.tusky.viewdata.AttachmentViewData
 import io.reactivex.rxjava3.android.schedulers.AndroidSchedulers
 import kotlinx.coroutines.launch
-import java.lang.IllegalStateException
-import java.util.LinkedHashSet
 import javax.inject.Inject
 
 /* Note from Andrew on Jan. 22, 2017: This class is a design problem for me, so I left it with an
@@ -311,7 +309,9 @@ abstract class SFragment : Fragment(), Injectable {
     private fun onMute(accountId: String, accountUsername: String) {
 
         showMuteAccountDialog(this.requireActivity(), accountUsername) { notifications: Boolean?, duration: Int? ->
-            timelineCases.mute(accountId, notifications == true, duration)
+            lifecycleScope.launch {
+                timelineCases.mute(accountId, notifications == true, duration)
+            }
         }
     }
 
@@ -319,7 +319,9 @@ abstract class SFragment : Fragment(), Injectable {
         AlertDialog.Builder(requireContext())
             .setMessage(getString(R.string.dialog_block_warning, accountUsername))
             .setPositiveButton(android.R.string.ok) { _: DialogInterface?, _: Int ->
-                timelineCases.block(accountId)
+                lifecycleScope.launch {
+                    timelineCases.block(accountId)
+                }
             }
             .setNegativeButton(android.R.string.cancel, null)
             .show()