Revert to simple testMode boolean check

Revert from string comparison back to simple boolean check. The helm
command order fix (--set after --values) ensures testMode is correctly
set as boolean true, which works with the simple if condition.

The previous string comparison attempt failed with:
  "error calling eq: incompatible types for comparison"
because --set testMode=true sets it as a boolean, not a string.

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

Author: davdhacs

chart/infra-server/templates/secrets.yaml

@@ -116,7 +116,7 @@ data:
 {{ end }}
 {{- end }}
 
-{{- if or .Values.localDeploy (eq .Values.testMode "true") }}
+{{- if or .Values.localDeploy .Values.testMode }}
 ---
 apiVersion: v1
 kind: Secret