fix(desktop): round share invite email field and button - #6980

Bugbot Analysis Progress (42s elapsed)

✅ Gathered PR context (12s)
✅ Completed bug detection (30s)
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Final Result: Bugbot completed review - no issues found! ✅

Request ID: serverGenReqId_15915a11-b65c-43f6-8610-50a6f4b09977