[CLNP-7450]Fixed a bug did not display read/deliver status icon in public groupChannel

[danney-chun]

/ PR title (Required)
[fix]: Fixed a bug that did not display the read/deliver status icon in the public groupChannel

// PR description (Optional)

• Message의 read/delivered status를 표시하는 조건이 public channel이 아닌 경우가 포함이 되어 있어서 이 부분 삭제를 했습니다.
  iOS/And의 경우에는 해당 조건이 없습니다.

// Footer (Recommended)
Fixes CLNP-7450

// Changelogs (Recommended)
// Add (internal) at the end of each changelog if internal.

Changelogs

• Fixed a bug that did not display the read/deliver status icon in the public groupChannel

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[OnestarLee]

lgtm!