fix: model with multi m2m fields generates wrong references name

[waketzheng]

Description

Fixes #1893

Motivation and Context

The new function _get_m2m_tables has argument table_name which is conflict with variable defined at https://github.com/tortoise/tortoise-orm/blob/0.24.1/tortoise/backends/base/schema_generator.py#L327

How Has This Been Tested?

make ci

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have added the changelog accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• All new and existing tests passed.

[codspeed-hq]

CodSpeed Performance Report

Merging #1897 will not alter performance

_{Comparing waketzheng:fix-multi-m2m (515370a) with develop (40b427d)}

Summary

✅ 16 untouched benchmarks

[coveralls]

Pull Request Test Coverage Report for Build 13540764588

Warning: This coverage report may be inaccurate.

This pull request's base commit is no longer the HEAD commit of its target branch. This means it includes changes from outside the original pull request, including, potentially, unrelated coverage changes.

• For more information on this, see Tracking coverage changes with pull request builds.
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• For a quick fix, rebase this PR at GitHub. Your next report should be accurate.

Details

• 5 of 5 (100.0%) changed or added relevant lines in 2 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.006%) to 89.427%

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Totals
Change from base Build 13496646441:	0.006%
Covered Lines:	6592
Relevant Lines:	7191

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💛 - Coveralls

[vincentWuK]

same issue! thx for fix!

[henadzit]

There is no semantic difference between db_table and table_name names but actually they are very different. Let's rename table_name to through_table_name.