Log file size in lora test (pytorch#16876)

Log foundation weight sizes in lora test when they are not identical.
It's failing occasionally on the release/1.1 branch, but haven't been
able to repro locally. Maybe CI machine is running out of
memory/truncating the file?

Co-authored-by: Github Executorch <github_executorch@arm.com>

Author: lucylq

.ci/scripts/test_lora.sh

@@ -117,7 +117,7 @@ else
   echo "Expected result prefix: ${EXPECTED_PREFIX}"
   echo "Actual result: ${RESULT}"
   echo "Test 2: Failure; results not the same"
-#   cleanup_files
+  cleanup_files
   exit 1
 fi
 
@@ -166,6 +166,8 @@ if diff -q qwen_foundation_lora_q.ptd qwen_foundation_q.ptd > /dev/null; then
     echo "qwen_foundation_lora_q.ptd and qwen_foundation_q.ptd are identical."
 else
     echo "qwen_foundation_lora_q.ptd and qwen_foundation_q.ptd are not identical."
+    ls -la qwen_foundation_lora_q.ptd
+    ls -la qwen_foundation_q.ptd
     cleanup_files
     exit 1
 fi