feat(ui): animate dictionaries section expand and collapse

app/src/main/java/com/example/research/ui/settings/components/DictionaryManagement.kt

@@ -1,7 +1,12 @@
 package com.example.research.ui.settings.components
 
+import androidx.compose.animation.AnimatedVisibility
 import androidx.compose.animation.core.animateFloatAsState
 import androidx.compose.animation.core.tween
+import androidx.compose.animation.expandVertically
+import androidx.compose.animation.fadeIn
+import androidx.compose.animation.fadeOut
+import androidx.compose.animation.shrinkVertically
 import androidx.compose.foundation.layout.Arrangement
 import androidx.compose.foundation.layout.Box
 import androidx.compose.foundation.layout.Column
@@ -115,7 +120,11 @@ fun DictionaryManagement(
                 testTag = "dictionary_header"
             )
 
-            if (isExpanded) {
+            AnimatedVisibility(
+                visible = isExpanded,
+                enter = expandVertically(animationSpec = tween(250)) + fadeIn(tween(250)),
+                exit = shrinkVertically(animationSpec = tween(200)) + fadeOut(tween(200)),
+            ) {
                  Column(
                     modifier = Modifier
                         .fillMaxWidth()