fix(test): correct relative path for PII LoRA model in auto-detection test

[yossiovadia]

Issue Description

The PII auto-detection test in src/semantic-router/pkg/classification/lora_auto_detection_test.go uses an incorrect relative path for the test model, causing the test to silently skip instead of running.

Current Problem

Line 92:

modelPath := "models/lora_pii_detector_bert-base-uncased_model"

Should be:

modelPath := "../../../../models/lora_pii_detector_bert-base-uncased_model"

Impact

• The test currently skips when the path isn't found (line 96)
• This means the PII auto-detection test has been silently skipping on every run
• The intent classification test (line 14) uses the correct relative path as reference

Referenced Discussion

From PR #726 review discussion:
#726 (comment)

Acceptance Criteria

• Fix the relative path in TestPIIAlreadyHasAutoDetection to match the pattern used in TestIntentClassificationAutoDetection
• Verify the test actually runs (doesn't skip)
• Confirm the test passes with the correct path

Related

• Follow-up from PR feat(classifier): enable LoRA auto-detection for intent classification #726
• Reported by: @rootfs
• Assignee: @yossiovadia