[pickers] Make the <input /> version of the fields opt-in

[flaviendelangle]

Part of #13188

Right now by default your field uses an <input /> HTML element.
You can use the new structure using the enableAccessibleFieldDOMStructure on any field or picker.

The goal of this issue is to switch the default value of enableAccessibleFieldDOMStructure to true.
We should deprecate enableAccessibleFieldDOMStructure during v8 and then remove it in v9.

This change requires to make sure we call the right TextField in each field (correctly handle when enableAccessibleFieldDOMStructure is null).
It also require changing the default value of the TEnableAccessibleFieldDOMStructure everywhere.

Search keywords:

[LukasTy]

Drop (use new fields if/when possible):

• https://mui.com/x/react-date-pickers/custom-field/#using-material-textfield
• https://mui.com/x/react-date-pickers/custom-field/#using-the-browser-input

[github-actions]

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