perf(about): parse aboutlibraries.json off the main thread

Bump AboutLibraries plugin to 15.0.4 -> 15.2.0; parse
aboutlibraries.json on Dispatchers.IO via produceState (header renders
immediately, rows fill in); drop animateContentSize from rows.

app/src/main/java/com/example/research/ui/about/AboutScreen.kt

@@ -1,6 +1,5 @@
 package com.example.research.ui.about
 
-import androidx.compose.animation.animateContentSize
 import androidx.compose.foundation.layout.Arrangement
 import androidx.compose.foundation.layout.Column
 import androidx.compose.foundation.layout.ExperimentalLayoutApi
@@ -27,6 +26,7 @@ import androidx.compose.material3.TopAppBarDefaults
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.getValue
 import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.produceState
 import androidx.compose.runtime.remember
 import androidx.compose.runtime.setValue
 import androidx.compose.ui.Alignment
@@ -43,6 +43,8 @@ import androidx.compose.ui.unit.dp
 import com.example.research.R
 import com.example.research.common.ui.components.OutlinedChoiceButton
 import com.example.research.ui.theme.AppWindowInsets
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.withContext
 
 @OptIn(ExperimentalMaterial3Api::class, ExperimentalLayoutApi::class)
 @Composable
@@ -57,8 +59,10 @@ fun AboutScreen(
     }
     val versionName = packageInfo?.versionName ?: stringResource(R.string.version_unknown)
     val uriHandler = LocalUriHandler.current
-    val librariesData = remember(context) {
-        AboutLibrariesParser.read(context, R.raw.aboutlibraries)
+    val librariesData by produceState<AboutLibrariesData?>(initialValue = null, context) {
+        value = withContext(Dispatchers.IO) {
+            AboutLibrariesParser.read(context, R.raw.aboutlibraries)
+        }
     }
     var expandedLibraryId by remember { mutableStateOf<String?>(null) }
     var dialogLicense by remember { mutableStateOf<AboutLicense?>(null) }
@@ -93,12 +97,12 @@ fun AboutScreen(
                 AboutHeader(versionName = versionName)
             }
             items(
-                items = librariesData.libraries,
+                items = librariesData?.libraries.orEmpty(),
                 key = AboutLibrary::uniqueId,
             ) { library ->
                 AboutLibraryRow(
                     library = library,
-                    licenses = librariesData.licenses,
+                    licenses = librariesData?.licenses.orEmpty(),
                     expanded = expandedLibraryId == library.uniqueId,
                     onToggle = {
                         expandedLibraryId = if (expandedLibraryId == library.uniqueId) {
@@ -191,8 +195,7 @@ private fun AboutLibraryRow(
     ) {
         Column(
             modifier = Modifier
-                .padding(horizontal = 16.dp, vertical = 12.dp)
-                .animateContentSize(),
+                .padding(horizontal = 16.dp, vertical = 12.dp),
             verticalArrangement = Arrangement.spacedBy(5.dp)
         ) {
             Row(