fix custom data lastModificationTime ignored during KDBX parse

Group and entry custom data items had their lastModificationTime
values read but discarded during XML parsing. This caused merge
conflict resolution in mergeCustomData() to always prefer incoming
data regardless of timestamps.

Author: Lcstyle

database/src/main/java/com/kunzisoft/keepass/database/file/input/DatabaseInputKDBX.kt

@@ -92,8 +92,10 @@ class DatabaseInputKDBX(database: DatabaseKDBX)
     private var customDataLastModificationTime: DateInstant? = null
     private var groupCustomDataKey: String? = null
     private var groupCustomDataValue: String? = null
+    private var groupCustomDataLastModificationTime: DateInstant? = null
     private var entryCustomDataKey: String? = null
     private var entryCustomDataValue: String? = null
+    private var entryCustomDataLastModificationTime: DateInstant? = null
 
     private var isRAMSufficient: (memoryWanted: Long) -> Boolean = {true}
 
@@ -540,7 +542,7 @@ class DatabaseInputKDBX(database: DatabaseKDBX)
             KdbContext.GroupCustomDataItem -> when {
                 name.equals(DatabaseKDBXXML.ElemKey, ignoreCase = true) -> groupCustomDataKey = readString(xpp)
                 name.equals(DatabaseKDBXXML.ElemValue, ignoreCase = true) -> groupCustomDataValue = readString(xpp)
-                name.equals(DatabaseKDBXXML.ElemLastModTime, ignoreCase = true) -> readDateInstant(xpp) // Ignore
+                name.equals(DatabaseKDBXXML.ElemLastModTime, ignoreCase = true) -> groupCustomDataLastModificationTime = readDateInstant(xpp)
                 else -> readUnknown(xpp)
             }
 
@@ -592,7 +594,7 @@ class DatabaseInputKDBX(database: DatabaseKDBX)
             KdbContext.EntryCustomDataItem -> when {
                 name.equals(DatabaseKDBXXML.ElemKey, ignoreCase = true) -> entryCustomDataKey = readString(xpp)
                 name.equals(DatabaseKDBXXML.ElemValue, ignoreCase = true) -> entryCustomDataValue = readString(xpp)
-                name.equals(DatabaseKDBXXML.ElemLastModTime, ignoreCase = true) -> readDateInstant(xpp) // Ignore
+                name.equals(DatabaseKDBXXML.ElemLastModTime, ignoreCase = true) -> entryCustomDataLastModificationTime = readDateInstant(xpp)
                 else -> readUnknown(xpp)
             }
 
@@ -750,11 +752,12 @@ class DatabaseInputKDBX(database: DatabaseKDBX)
         } else if (ctx == KdbContext.GroupCustomDataItem && name.equals(DatabaseKDBXXML.ElemStringDictExItem, ignoreCase = true)) {
             groupCustomDataKey?.let { customDataKey ->
                 groupCustomDataValue?.let { customDataValue ->
-                    ctxGroup?.customData?.put(CustomDataItem(customDataKey, customDataValue))
+                    ctxGroup?.customData?.put(CustomDataItem(customDataKey, customDataValue, groupCustomDataLastModificationTime))
                 }
             }
             groupCustomDataKey = null
             groupCustomDataValue = null
+            groupCustomDataLastModificationTime = null
             return KdbContext.GroupCustomData
 
         } else if (ctx == KdbContext.Entry && name.equals(DatabaseKDBXXML.ElemEntry, ignoreCase = true)) {
@@ -802,11 +805,12 @@ class DatabaseInputKDBX(database: DatabaseKDBX)
         } else if (ctx == KdbContext.EntryCustomDataItem && name.equals(DatabaseKDBXXML.ElemStringDictExItem, ignoreCase = true)) {
             entryCustomDataKey?.let { customDataKey ->
                 entryCustomDataValue?.let { customDataValue ->
-                    ctxEntry?.customData?.put(CustomDataItem(customDataKey, customDataValue))
+                    ctxEntry?.customData?.put(CustomDataItem(customDataKey, customDataValue, entryCustomDataLastModificationTime))
                 }
             }
             entryCustomDataKey = null
             entryCustomDataValue = null
+            entryCustomDataLastModificationTime = null
             return KdbContext.EntryCustomData
         } else if (ctx == KdbContext.EntryHistory && name.equals(DatabaseKDBXXML.ElemHistory, ignoreCase = true)) {
             entryInHistory = false