chore: Remove duplicate reference to process hook

[mrbazzan]

Description

ca9c318736bfa5345a3e7 introduces an import processor which
has already been defined. This PR removes the duplicate and extends the custom hook to work as described
in the docs.

Related resources

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Checklist

• I have opened this pull request against master
• I have added or modified the tests when changing logic
• I have followed the conventional commits guidelines to add meaningful information into the changelog
• I have read the contribution guidelines and I have joined #workgroup-pr-review on
  Discord to find a “pr review buddy” who is going to review my pull request.

Summary by Sourcery

Consolidate and simplify the plugin import processing by removing duplicate helper methods and always using the unified custom_process_hook interface with explicit plugin_data parameter, and update tests accordingly.

Enhancements:

• Remove duplicate import processor and obsolete helper methods from datastructures
• Require plugin_data in custom_process_hook signature and streamline hook invocation
• Update tests to pass plugin_data to custom_process_hook and reflect its simplified API

Tests:

• Adjust tests to supply plugin_data to custom_process_hook and validate its return signature

[sourcery-ai]

Reviewer's guide (collapsed on small PRs)

Reviewer's Guide

Centralize and simplify the import processing hook by removing duplicate logic in the restore method, updating the custom_process_hook signature to always accept plugin data, and adjusting tests to match the new signature.

Class diagram for updated import processing hook logic

classDiagram
    class PluginRestorer {
        +restore(placeholder, language, parent=None)
        -data
    }
    class custom_process_hook {
        +custom_process_hook(transfer_hook, plugin, plugin_data)
    }
    PluginRestorer --> custom_process_hook: uses

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Flow diagram for centralized import processing hook

flowchart TD
    A["restore() in PluginRestorer"] --> B["custom_process_hook('DJANGOCMS_TRANSFER_PROCESS_IMPORT_PLUGIN_DATA', plugin, data)"]
    B --> C["User-defined import processor function called with (plugin, data)"]

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File-Level Changes

Change	Details	Files
Consolidate plugin import processing into a single hook invocation	Removed explicit call to the user site import processor in restore Deleted duplicate _call_user_site_import_processor_if_necessary and _resolve_function_from_full_path methods Removed redundant plugin.save() call Updated custom_process_hook invocation to include plugin data	djangocms_transfer/datastructures.py
Simplify custom_process_hook signature and logic	Changed signature to require plugin_data parameter Removed conditional branching around plugin_data Always invoke the user-provided function with plugin and plugin_data	djangocms_transfer/__init__.py
Adjust tests to the updated hook signature	Added plugin_data argument to custom_process_hook calls Updated expected return values/assertions to include plugin_data	tests/transfer/test_helper.py

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 58.82%. Comparing base (ca9c318) to head (74cbcbe).

Additional details and impacted files

@@            Coverage Diff             @@
##           master      #51      +/-   ##
==========================================
+ Coverage   58.43%   58.82%   +0.38%     
==========================================
  Files          10       10              
  Lines         409      391      -18     
  Branches       58       56       -2     
==========================================
- Hits          239      230       -9     
+ Misses        156      148       -8     
+ Partials       14       13       -1     

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