[HOLD for payment 2023-10-23] [HOLD for payment 2023-10-23] Change variant to mode in run-android command

[mountiny]

Problem

The variant flag is going to be removed and replaced with mode for the run-android command. This PR changes it, so the command won't fail/install wrong app version when we'll have bumped react native.

Solution

Use the mode flag instead

[staszekscp]

Hey! I'm going to fix it :)

[melvin-bot]

Reviewing label has been removed, please complete the "BugZero Checklist".

[melvin-bot]

The solution for this issue has been 🚀 deployed to production 🚀 in version 1.3.84-10 and is now subject to a 7-day regression period 📆. Here is the list of pull requests that resolve this issue:

• [NoQA] Change variant to mode in run-android command in package.json #29440

If no regressions arise, payment will be issued on 2023-10-23. 🎊

After the hold period is over and BZ checklist items are completed, please complete any of the applicable payments for this issue, and check them off once done.

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• @staszekscp does not require payment (Contractor)

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