fix: Possible undefined member display name

[rzadp]

Happens if you open any tab when the display name is not synced yet

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Details:
AssertionError: undefined == true
    at sorter (https://apollo3.kube.moon.dxos.network/app/wrn%3A%2F%2Fdxos%2Fapplication%2Fteamwork%40alpha/dxos~5983779d.bundle.js:5895:25)
    at Array.sort (<anonymous>)
    at push.Array.concat.exports.MemberList (https://apollo3.kube.moon.dxos.network/app/wrn%3A%2F%2Fdxos%2Fapplication%2Fteamwork%40alpha/dxos~5983779d.bundle.js:5909:17)
    at oh (https://apollo3.kube.moon.dxos.network/app/wrn%3A%2F%2Fdxos%2Fapplication%2Fteamwork%40alpha/vendor~402f6fec.bundle.js:63254:146)
    at di (https://apollo3.kube.moon.dxos.network/app/wrn%3A%2F%2Fdxos%2Fapplication%2Fteamwork%40alpha/vendor~402f6fec.bundle.js:63276:309)
    at Rj (https://apollo3.kube.moon.dxos.network/app/wrn%3A%2F%2Fdxos%2Fapplication%2Fteamwork%40alpha/vendor~402f6fec.bundle.js:63364:406)
    at Qj (https://apollo3.kube.moon.dxos.network/app/wrn%3A%2F%2Fdxos%2Fapplication%2Fteamwork%40alpha/vendor~402f6fec.bundle.js:63347:265)
    at Kj (https://apollo3.kube.moon.dxos.network/app/wrn%3A%2F%2Fdxos%2Fapplication%2Fteamwork%40alpha/vendor~402f6fec.bundle.js:63347:194)
    at yj (https://apollo3.kube.moon.dxos.network/app/wrn%3A%2F%2Fdxos%2Fapplication%2Fteamwork%40alpha/vendor~402f6fec.bundle.js:63340:172)
    at https://apollo3.kube.moon.dxos.network/app/wrn%3A%2F%2Fdxos%2Fapplication%2Fteamwork%40alpha/vendor~402f6fec.bundle.js:63224:115
    at push.exports.unstable_runWithPriority (https://apollo3.kube.moon.dxos.network/app/wrn%3A%2F%2Fdxos%2Fapplication%2Fteamwork%40alpha/vendor~402f6fec.bundle.js:63431:467)
    at cg (https://apollo3.kube.moon.dxos.network/app/wrn%3A%2F%2Fdxos%2Fapplication%2Fteamwork%40alpha/vendor~402f6fec.bundle.js:63223:325)
    at fg (https://apollo3.kube.moon.dxos.network/app/wrn%3A%2F%2Fdxos%2Fapplication%2Fteamwork%40alpha/vendor~402f6fec.bundle.js:63224:61)
    at gg (https://apollo3.kube.moon.dxos.network/app/wrn%3A%2F%2Fdxos%2Fapplication%2Fteamwork%40alpha/vendor~402f6fec.bundle.js:63223:496)
    at Ga (https://apollo3.kube.moon.dxos.network/app/wrn%3A%2F%2Fdxos%2Fapplication%2Fteamwork%40alpha/vendor~402f6fec.bundle.js:63388:95)
    at gd (https://apollo3.kube.moon.dxos.network/app/wrn%3A%2F%2Fdxos%2Fapplication%2Fteamwork%40alpha/vendor~402f6fec.bundle.js:63169:371)
    at HTMLDocument.sentryWrapped (https://apollo3.kube.moon.dxos.network/app/wrn%3A%2F%2Fdxos%2Fapplication%2Fteamwork%40alpha/vendor~4134d62c.bundle.js:30138:23)

[github-actions[bot]]

Total Coverage: 42.22

Coverage report

=============================== Coverage summary ===============================
Statements   : 42.22% ( 3306/7830 )
Branches     : 72.92% ( 342/469 )
Functions    : 59.52% ( 172/289 )
Lines        : 42.22% ( 3306/7830 )
================================================================================

[github-actions[bot]]

Total Coverage: 42.22

Coverage report

=============================== Coverage summary ===============================
Statements   : 42.22% ( 3306/7830 )
Branches     : 72.92% ( 342/469 )
Functions    : 59.52% ( 172/289 )
Lines        : 42.22% ( 3306/7830 )
================================================================================