Fix deserialization when sending prompts (#5666)

Author: manodnyab

plugins/amazonq/shared/jetbrains-community/src/software/aws/toolkits/jetbrains/services/amazonq/lsp/AmazonQLanguageClientImpl.kt

@@ -151,7 +151,7 @@ class AmazonQLanguageClientImpl(private val project: Project) : AmazonQLanguageC
             formatMappings[format]?.let { filters.add(it) }
         }
         val defaultUri = params.defaultUri ?: "export-chat.md"
-        val saveAtUri = defaultUri.substring(defaultUri.lastIndexOf("/"))
+        val saveAtUri = defaultUri.substring(defaultUri.lastIndexOf("/") + 1)
         return CompletableFuture.supplyAsync(
             {
                 val descriptor = FileSaverDescriptor("Export", "Choose a location to export").apply {

plugins/amazonq/shared/jetbrains-community/src/software/aws/toolkits/jetbrains/services/amazonq/lsp/flareChat/AwsServerCapabilitiesProvider.kt

@@ -57,5 +57,5 @@ data class QuickActionsCommandGroups(
 
 data class Command(
     val command: String,
-    val description: String,
+    val description: String?,
 )