feat: Added pending & failed message

[liamcho]

Changes

• Added pending and failed messages

ticket: AC-2609

Sign.in.to.Sendbird.webm

Additional Notes

• Tested with localCacheEnabled false, and message input disabled false

Checklist

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• [Required] CI has passed all checks.
• [Required] A self-review has been conducted to ensure there are no minor mistakes.
• [Required] Unnecessary comments/debugging code have been removed.
• [Required] All requirements specified in the ticket have been accurately implemented.
• Ensure the ticket has been updated with the sprint, status, and story points.

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[github-actions]

Size Change: +227 B (+0.04%)

Total Size: 602 kB

Filename	Size	Change
./dist/__bundle-46d64517-********.js	4.01 kB	+1 B (+0.02%)
./dist/__bundle-bbedc09c-********.js	891 B	-1 B (-0.11%)
./dist/index-********.js	305 kB	+41 B (+0.01%)
./dist/index.es.js	170 B	-2 B (-1.16%)
./dist/index.umd.js	282 kB	+139 B (+0.05%)
./dist/Placeholder.error-********.js	345 B	-1 B (-0.29%)
./dist/Placeholder.noChannels-********.js	182 B	-3 B (-1.62%)
./dist/Placeholder.noMessages-********.js	182 B	-2 B (-1.09%)
./dist/PlaceholderCommon-********.js	246 B	+2 B (+0.82%)
./dist/style.css	8.57 kB	+53 B (+0.62%)

ℹ️ View Unchanged

Filename	Size
./dist/__bundle-7c3d40f4-********.js	21 B
./dist/Placeholder.loading-********.js	184 B

_{compressed-size-action}

[liamcho]

깃헙이 이상하네요..

[bang9]

lgtm!