feat: standardize configuration fields across all evaluation examples

- Add `fixed_ip` field to all 369 JSON files in examples directory
  - Set to `true` for 8 files listed in google_chrome.json multi_apps
  - Set to `false` for remaining 361 files
- Add `possibility_of_env_change` field to 363 JSON files missing this field
  - Set to "low" for newly added fields
  - Preserve existing values (4 medium, 2 high) for 6 files that already had this field

This ensures consistent configuration schema across all evaluation examples
while maintaining backward compatibility with existing settings.

evaluation_examples/examples/libreoffice_impress/05dd4c1d-c489-4c85-8389-a7836c4f0567.json

@@ -1,7 +1,7 @@
 {
   "id": "05dd4c1d-c489-4c85-8389-a7836c4f0567",
   "snapshot": "libreoffice_impress",
-  "instruction":"Align the first textbox on slide 3 to the right, on slide 4 to the center, and on slide 5 to the left. Ensure that the alignment is applied correctly to each respective slide.",
+  "instruction": "Align the first textbox on slide 3 to the right, on slide 4 to the center, and on slide 5 to the left. Ensure that the alignment is applied correctly to each respective slide.",
   "source": "https://arxiv.org/pdf/2311.01767.pdf",
   "config": [
     {
@@ -65,9 +65,9 @@
     "conj": "or",
     "expected": [
       {
-      "type": "cloud_file",
-      "path": "https://huggingface.co/datasets/xlangai/ubuntu_osworld_file_cache/resolve/main/libreoffice_impress/05dd4c1d-c489-4c85-8389-a7836c4f0567/38_1_Gold.pptx",
-      "dest": "38_1_Gold.pptx"
+        "type": "cloud_file",
+        "path": "https://huggingface.co/datasets/xlangai/ubuntu_osworld_file_cache/resolve/main/libreoffice_impress/05dd4c1d-c489-4c85-8389-a7836c4f0567/38_1_Gold.pptx",
+        "dest": "38_1_Gold.pptx"
       },
       {
         "type": "cloud_file",
@@ -88,5 +88,7 @@
       }
     ]
   },
-  "proxy": false
+  "proxy": false,
+  "fixed_ip": false,
+  "possibility_of_env_change": "low"
 }