fix: Allow upload limit increase in kubernetes deployment (#7664)

* Add nginx body size upload limit config

* Add nginx body size upload limit config

* Rename env variable to match existing max upload

* Rename env variable to match existing max upload

* Add export of Max_file_size_upload variable

* Add unit to max body size

* Remove unit from default assignment

* Apply comments and move config to default nginx conf template

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Co-authored-by: daniel.kaestner <daniel.kaestner@cas.de>
Co-authored-by: Dexter192 <DanielKaestner@otlook.de>

docker/frontend/default.conf.template

@@ -5,6 +5,7 @@ events {}
 http {
     include /etc/nginx/mime.types;
     default_type text/plain;
+    client_max_body_size ${LANGFLOW_MAX_FILE_SIZE_UPLOAD}M;
 
     types {
         text/html html;