fix(helm): align configmap discord condition with secret/deployment/NOTES

Replace the looser `or (enabled, botToken)` check with the same
`botToken`-gated condition used by the other three templates, preventing
configmap from rendering [discord] when no token is available.
Also switches pipe syntax to function-call syntax for consistency.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: JARVIS-coding-Agent

charts/openab/templates/configmap.yaml

@@ -10,7 +10,7 @@ metadata:
     {{- include "openab.labels" $d | nindent 4 }}
 data:
   config.toml: |
-    {{- if and (ne (($cfg.discord).enabled | toString) "false") (or ($cfg.discord).enabled ($cfg.discord).botToken) }}
+    {{- if and (ne (toString ($cfg.discord).enabled) "false") ($cfg.discord).botToken }}
     [discord]
     bot_token = "${DISCORD_BOT_TOKEN}"
     {{- range $cfg.discord.allowedChannels }}