Smart auto-selection of types

[hal0x2328]

Instead of defaulting to the Hexstring type for notification values in the transaction page, pre-select a type before the component renders, based on a few logical rules. For instance:

• If all bytes in the hexstring fall in the printable ASCII range, switch the decoder to String type.
• If all bytes in the hexstring are not in the printable ASCII range and the hexstring is exactly 40 bytes long, switch the decoder to the Address type.