App: [Payment due June 23 2023 $1500] App crashing when sending mention with two underscores

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Action Performed:

1. Open staging.new.expensify.com
2. Start a DM with someone
3. Type a mention (e.g. @someone) to a chat with two underscores before and after the @ symbols like so:

• Type mention: @concierge@expensify.com
• Manually edit the mention to have underscores like so: @_concierge_@expensify.com

1. Hit send on the manually edited mention

Expected Result:

App shouldn’t be crashing

Actual Result:

App crashed

Workaround:

Unknown

Platforms:

Which of our officially supported platforms is this issue occurring on?

• Android / native
• Android / Chrome
• iOS / native
• iOS / Safari
• MacOS / Chrome / Safari
• MacOS / Desktop

Version Number: 1.3.22.0

Reproducible in staging?: yes

Reproducible in production?: yes

If this was caught during regression testing, add the test name, ID and link from TestRail:

Email or phone of affected tester (no customers):

Logs: https://stackoverflow.com/c/expensify/questions/4856

Notes/Photos/Videos: Any additional supporting documentation

https://github.com/Expensify/App/assets/93399543/e1b98d23-f45b-4bd9-b57c-ba3d44c4c251

https://github.com/Expensify/App/assets/93399543/f7147b2d-2356-4e95-ac05-0d808f6b1701

Expensify/Expensify Issue URL:

Issue reported by: @kerupuksambel

Slack conversation: https://expensify.slack.com/archives/C049HHMV9SM/p1685210491228269

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Upwork Automation - Do Not Edit

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• Last Price Increase: 2023-06-07