[BOOK-260] chore: model 모듈내 누락된 stable 어노테이션 추가

Author: easyhooon

core/model/src/main/kotlin/com/ninecraft/booket/core/model/BookUpsertModel.kt

@@ -1,8 +1,5 @@
 package com.ninecraft.booket.core.model
 
-import androidx.compose.runtime.Stable
-
-@Stable
 data class BookUpsertModel(
     val userBookId: String,
     val userId: String,

core/model/src/main/kotlin/com/ninecraft/booket/core/model/ReadingRecordsModel.kt

@@ -1,5 +1,7 @@
 package com.ninecraft.booket.core.model
 
+import androidx.compose.runtime.Stable
+
 data class ReadingRecordsModel(
     val lastPage: Boolean = true,
     val totalResults: Int = 0,
@@ -8,6 +10,7 @@ data class ReadingRecordsModel(
     val readingRecords: List<ReadingRecordModel> = emptyList(),
 )
 
+@Stable
 data class ReadingRecordModel(
     val id: String = "",
     val userBookId: String = "",