fix(amazonq): fix uploading file method error handling for /doc

.changes/next-release/bugfix-8878216c-a256-4459-80de-8334711c8d53.json

@@ -0,0 +1,4 @@
+{
+  "type" : "bugfix",
+  "description" : "Amazon Q /doc: Fix uploading file method throwing incorrect workspace too large error message"
+}

plugins/amazonq/chat/jetbrains-community/src/software/aws/toolkits/jetbrains/common/util/AmazonQCodeGenService.kt

@@ -20,6 +20,7 @@
 import software.aws.toolkits.core.utils.warn
 import software.aws.toolkits.jetbrains.common.clients.AmazonQCodeGenerateClient
 import software.aws.toolkits.jetbrains.common.session.Intent
+import software.aws.toolkits.jetbrains.services.amazonqDoc.docServiceError
 import software.aws.toolkits.jetbrains.services.amazonqDoc.session.DocGenerationStreamResult
 import software.aws.toolkits.jetbrains.services.amazonqDoc.session.ExportDocTaskAssistResultArchiveStreamResult
 import software.aws.toolkits.jetbrains.services.amazonqFeatureDev.CodeIterationLimitException
@@ -31,6 +32,7 @@
 import software.aws.toolkits.jetbrains.services.amazonqFeatureDev.MonthlyConversationLimitError
 import software.aws.toolkits.jetbrains.services.amazonqFeatureDev.ZipFileCorruptedException
 import software.aws.toolkits.jetbrains.services.cwc.controller.chat.telemetry.getStartUrl
+import software.aws.toolkits.resources.message
 import software.aws.toolkits.telemetry.AmazonqTelemetry
 import software.aws.toolkits.telemetry.MetricResult
 
@@ -82,7 +84,7 @@
         }
     }
 
-    fun createUploadUrl(conversationId: String, contentChecksumSha256: String, contentLength: Long, uploadId: String):
+    fun createUploadUrl(conversationId: String, contentChecksumSha256: String, contentLength: Long, uploadId: String, featureName: String? = null):
         CreateUploadUrlResponse {
         try {
             logger.debug { "Executing createUploadUrl with conversationId $conversationId" }
@@ -104,6 +106,9 @@
                 logger.warn(e) { "Create UploadUrl failed for request: ${e.requestId()}" }
 
                 if (e is ValidationException && e.message?.contains("Invalid contentLength") == true) {
+                    if (featureName?.equals("docGeneration") == true) {
+                        throw docServiceError(message("amazonqDoc.exception.content_length_error"))
+                    }
                     throw ContentLengthException(operation = FeatureDevOperation.CreateUploadUrl.toString(), desc = null, cause = e.cause)
                 }
             }

plugins/amazonq/chat/jetbrains-community/src/software/aws/toolkits/jetbrains/services/amazonqDoc/session/PrepareDocGenerationState.kt

@@ -48,7 +48,8 @@ class PrepareDocGenerationState(
                 config.conversationId,
                 zipFileChecksum,
                 zipFileLength,
-                uploadId
+                uploadId,
+                "docGeneration"
             )
 
             uploadArtifactToS3(