XER10-3123: Fix the syntax error

[jayalaxmibc]

review the code for 3123

[github-actions]

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Pull request overview

Fixes a shell conditional syntax issue in the init-time service_misc.sh handler by updating how RG_MD mode checks are expressed before starting multicast-related services.

Changes:

• Replace -o inside [[ ... ]] with || in two RG_MD mode checks.
• Keep the mcast/mld proxy launch gating on script existence (-f) and run them in background on lan-status.

Comments suppressed due to low confidence (1)

source/scripts/init/service.d/service_misc.sh:82

• Same portability concern as above: [[ ... ]] is not guaranteed under #!/bin/sh. Using POSIX [ ... ] avoids shell-dependent parsing differences.

if [[ "$RG_MD" = "2" || "$RG_MD" = "3" ]] && [ -f /etc/utopia/service.d/service_mldproxy.sh ]; then

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