fix: remove legacy z-index overrides on model config popup (#33769)

Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

web/app/components/workflow/nodes/knowledge-retrieval/components/metadata/metadata-filter/index.tsx

@@ -80,7 +80,6 @@ const MetadataFilter = ({
               </div>
               <div className="mt-1 px-4">
                 <ModelParameterModal
-                  portalToFollowElemContentClassName="z-[50]"
                   popupClassName="!w-[387px]"
                   isInWorkflow
                   isAdvancedMode={true}

web/app/components/workflow/nodes/llm/components/json-schema-config-modal/json-schema-generator/prompt-editor.tsx

@@ -63,7 +63,6 @@ const PromptEditor: FC<PromptEditorProps> = ({
         </div>
         <ModelParameterModal
           popupClassName="!w-[448px]"
-          portalToFollowElemContentClassName="z-[1000]"
           isAdvancedMode={true}
           provider={model.provider}
           completionParams={model.completion_params}