all: refactor Modifier ordering

Drawns on the suggestions outlined in https://chris.banes.dev/always-provide-a-modifier/

android/src/main/kotlin/dev/msfjarvis/claw/android/ui/ClawFab.kt

@@ -41,7 +41,7 @@ fun ClawFab(
         targetOffsetY = { fullHeight -> fullHeight },
         animationSpec = tween(durationMillis = AnimationDuration, easing = FastOutLinearInEasing),
       ),
-    modifier = Modifier.then(modifier),
+    modifier = modifier,
   ) {
     FloatingActionButton(onClick = { coroutineScope.launch { listState.animateScrollToItem(0) } }) {
       Icon(

android/src/main/kotlin/dev/msfjarvis/claw/android/ui/HottestPosts.kt

@@ -37,7 +37,7 @@ fun HottestPosts(
         listState = listState,
         isSaved = isPostSaved,
         postActions = postActions,
-        modifier = Modifier.padding(top = 16.dp).then(modifier),
+        modifier = modifier.padding(top = 16.dp),
       )
     }
   }

android/src/main/kotlin/dev/msfjarvis/claw/android/ui/NetworkPosts.kt

@@ -31,7 +31,7 @@ fun NetworkPosts(
   val coroutineScope = rememberCoroutineScope()
   LazyColumn(
     state = listState,
-    modifier = Modifier.then(modifier),
+    modifier = modifier,
   ) {
     items(items) { item ->
       if (item != null) {

android/src/main/kotlin/dev/msfjarvis/claw/android/ui/TopAppBar.kt

@@ -22,6 +22,6 @@ fun ClawAppBar(
         modifier = Modifier.padding(horizontal = 16.dp),
       )
     },
-    modifier = Modifier.then(modifier),
+    modifier = modifier,
   )
 }