Support scalar values for func Array

[Ted-Jiang]

Describe the bug

Finished dev [unoptimized + debuginfo] target(s) in 0.85s
     Running `target/debug/datafusion-cli`
DataFusion CLI v7.0.0
❯ SELECT array(1, 2, 3);
NotImplemented("Array is not implemented for scalar values.")

Supposed

> SELECT array(1, 2, 3);
 [1,2,3]

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Expected behavior
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Additional context
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