fix: restore default Vector Store RAG key variables (#6721)

* fix: restore default Vector Store RAG key variables

* Update Vector Store RAG.json

Author: erichare

src/backend/base/langflow/initial_setup/starter_projects/Vector Store RAG.json

@@ -1752,15 +1752,15 @@
                 "input_types": [
                   "Message"
                 ],
-                "load_from_db": false,
+                "load_from_db": true,
                 "name": "openai_api_key",
                 "password": true,
                 "placeholder": "",
                 "required": true,
                 "show": true,
                 "title_case": false,
                 "type": "str",
-                "value": ""
+                "value": "OPENAI_API_KEY"
               },
               "openai_api_type": {
                 "_input_type": "MessageTextInput",
@@ -2288,15 +2288,15 @@
                 "input_types": [
                   "Message"
                 ],
-                "load_from_db": false,
+                "load_from_db": true,
                 "name": "openai_api_key",
                 "password": true,
                 "placeholder": "",
                 "required": true,
                 "show": true,
                 "title_case": false,
                 "type": "str",
-                "value": ""
+                "value": "OPENAI_API_KEY"
               },
               "openai_api_type": {
                 "_input_type": "MessageTextInput",
@@ -2918,7 +2918,7 @@
                 "input_types": [
                   "Message"
                 ],
-                "load_from_db": false,
+                "load_from_db": true,
                 "name": "api_key",
                 "password": true,
                 "placeholder": "",
@@ -3882,7 +3882,7 @@
                 "dynamic": false,
                 "info": "Authentication token for accessing Astra DB.",
                 "input_types": [],
-                "load_from_db": false,
+                "load_from_db": true,
                 "name": "token",
                 "password": true,
                 "placeholder": "",
@@ -3891,7 +3891,7 @@
                 "show": true,
                 "title_case": false,
                 "type": "str",
-                "value": ""
+                "value": "ASTRA_DB_APPLICATION_TOKEN"
               }
             },
             "tool_mode": false
@@ -4568,7 +4568,7 @@
                 "dynamic": false,
                 "info": "Authentication token for accessing Astra DB.",
                 "input_types": [],
-                "load_from_db": false,
+                "load_from_db": true,
                 "name": "token",
                 "password": true,
                 "placeholder": "",
@@ -4577,7 +4577,7 @@
                 "show": true,
                 "title_case": false,
                 "type": "str",
-                "value": ""
+                "value": "ASTRA_DB_APPLICATION_TOKEN"
               }
             },
             "tool_mode": false