Rewrite the legacy token tests without `@solana/spl-token`

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Latest commit: 21a7addffd4bd627190579108eb22d7a8c9e9f48

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[steveluscher]

• #2817
• #2816
• #2821 👈
• #2819 : 1 other dependent PR (#2815 )
• master

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Merge activity

• Jun 14, 11:10 AM PDT: @steveluscher started a stack merge that includes this pull request via Graphite.
• Jun 14, 11:11 AM PDT: @steveluscher merged this pull request with Graphite.

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