fix: use Docker-internal URL for server OIDC issuer in bootstrap

Bootstrap was sending LOGTO_PUBLIC_ENDPOINT (http://localhost:3001)
as the OIDC issuer URI to the server. Inside Docker, localhost is
unreachable. Changed to LOGTO_ENDPOINT (http://logto:3001).

Also: .env must set LOGTO_ISSUER_URI=http://logto:3001/oidc (not
localhost) since this env var feeds cameleer3-server's OIDC decoder.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

docker/logto-bootstrap.sh

@@ -442,7 +442,7 @@ if [ "$SERVER_HEALTHY" = "yes" ] && [ -n "$TRAD_SECRET" ]; then
       -H "Content-Type: application/json" \
       -d "{
         \"enabled\": true,
-        \"issuerUri\": \"$LOGTO_PUBLIC_ENDPOINT/oidc\",
+        \"issuerUri\": \"$LOGTO_ENDPOINT/oidc\",
         \"clientId\": \"$TRAD_ID\",
         \"clientSecret\": \"$TRAD_SECRET\",
         \"autoSignup\": true,