fix(inputContainer): remove get `maxLength` if unspecified
fix(inputContainer): remove get `maxLength` if unspecified

INPUT elements return `maxLength` equal `524,288` though unspecified.
TEXTAREA elements return `maxLength equal `-1` though unspecified.
`InputCharCounter` should not display any maximum length if unspecified.
To show maximum length in `InputCharCounter`, explicitely set
the `maxLength` property.

CyclicMaterials/molecule-input,CyclicMaterials/molecule-input