The same issue can be seen on ebay.com as well. The phone field is not auto-filled and can't be auto-filled with Firefox 97.0.1.
Bug 1753669 Comment 3 Edit History
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The same issue can be seen on ebay.com as well. The phone field is not auto-filled and can't be auto-filled with Firefox 97.0.1 on Windows 7x64 and Windows 10x64.