[TIR] Allow starred expressions in TIR script

[kparzysz-quic]

Small change in the evaluator to allow it to handle starred expressions (i.e. list/tuple splicing).

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• cc @Hzfengsy, @junrushao, @quic-sanirudh, @shingjan _{See #10317 for details}

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• cc @Hzfengsy, @junrushao, @quic-sanirudh, @shingjan _{See #10317 for details}

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• cc @Hzfengsy, @junrushao, @quic-sanirudh, @shingjan _{See #10317 for details}

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• cc @Hzfengsy, @junrushao, @quic-sanirudh, @shingjan _{See #10317 for details}

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• cc @Hzfengsy, @junrushao, @quic-sanirudh, @shingjan _{See #10317 for details}

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• cc @Hzfengsy, @junrushao, @quic-sanirudh, @shingjan _{See #10317 for details}

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[Lunderberg]

I really like this, and it reduces some of the tedious parts of writing generic TIR functions. Playing around with it, I found a few more cases where it could be useful, and opened #15442 to extend the functionality to for-loops (e.g. for *spatial,reduction in T.grid(*buf.shape)).