The DecimalArrayBuilder should use FixedSizedBinaryBuilder

[HaoYang670]

Is your feature request related to a problem or challenge? Please describe what you are trying to do.
Currently, the decimal array builder use FixedSizedListBuilder. This is not a good solution because:

1. DecimalArray::from_fixed_size_list_array is a “dangerous” function: The null buffer of the child data is dropped.
2. More space is occupied: To build a fixed size list array, we have to create another child array data. But what we need is just the value buffer

Describe the solution you'd like

• Add support of converting FixedSizeBinaryArray to DecimalArray #2041
• DecimalBuilder should use FixedSizeBinaryBuilder #2092

Describe alternatives you've considered
A clear and concise description of any alternative solutions or features you've considered.

Additional context
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