[REF-2296] Rename recursive functions

[martinxu9]

Summary

• Rename the current recursive functions, so it is more consistent with common naming conventions, also user unlikely to override them when implementing their components.
  • get_imports -> _get_all_imports
  • get_hooks -> _get_all_hooks
  • get_hooks_internal -> _get_all_hooks_internal
  • add_style -> add_styles_recursive
  • get_custom_code -> _get_all_custom_code
  • get_dynamic_imports -> _get_all_dynamic_imports
  • get_custom_components -> _get_all_custom_components
  • get_app_wrap_components -> _get_all_app_wrap_components
  • get_refs -> _get_all_refs

[linear]

REF-2296 Rename recursive functions with get_all_ prefix

[picklelo]

Looks good, let's hold off on the _render for now since that will change the public API

[masenf]

This looks good to me.

My personal preference is _add_style_recursive but i wouldn't push too hard about it. I like _add_style_recursive because it describes exactly what this function is doing: adding the given style recursively down the tree.