[AC-3888] chore: add service name to widget playground

[bang9]

Changes

• Added service name to playground

ticket: AC-3888

Additional Notes

Checklist

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[github-actions]

Size Change: +27 B (0%)

Total Size: 602 kB

Filename	Size	Change
./dist/__bundle-bbedc09c-********.js	891 B	-1 B (-0.11%)
./dist/index-********.js	305 kB	+16 B (+0.01%)
./dist/index.umd.js	282 kB	+12 B (0%)
./dist/Placeholder.loading-********.js	185 B	+1 B (+0.54%)
./dist/Placeholder.noChannels-********.js	183 B	-2 B (-1.08%)
./dist/Placeholder.noMessages-********.js	183 B	-1 B (-0.54%)
./dist/PlaceholderCommon-********.js	246 B	+2 B (+0.82%)

ℹ️ View Unchanged

Filename	Size
./dist/__bundle-46d64517-********.js	4.01 kB
./dist/__bundle-7c3d40f4-********.js	21 B
./dist/index.es.js	172 B
./dist/Placeholder.error-********.js	346 B
./dist/style.css	8.51 kB

_{compressed-size-action}

[liamcho]

LGTM