fix(personal-room): show only the personal room link when an alias is set

Maximilian Fußrequested to merge
m.fuss/web-app:3571-backport-personal-room-unify-link-handling-to-2-10-x-26-3-x into release/v2.10.x

fix(personal-room): show only the personal room link when an alias is set

Closes #3571 (closed)

(cherry picked from commit 35bb9867)

Closes #3571 (closed)

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