Paste from word should work for legal list only

[illia-stv]

Suggested merge commit message (convention)

Fix (Paste-from-office): When paste from word should recognise legal list only. Closes #6019.

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[illia-stv]

Fix explanation:
We noticed multi level list have mso-level-number-format attribute except legal lists, so we used that. If list has legal list match and doesn't has mso-level-number-format we are assigning legal-list class.

[mmotyczynska]

Works as expected.

I tried to find all variables containing legal word and propose a change so they are more descriptive. If you find more please also change them so they contain legalStyleList phrase rather than simply legal or legalType (as now we treat it as a style, not a type).

Other than that, please also add a dedicated test with a Word file containing an example of legal-style list and multi-level lists.

[illia-stv]

Works as expected.

I tried to find all variables containing legal word and propose a change so they are more descriptive. If you find more please also change them so they contain legalStyleList phrase rather than simply legal or legalType (as now we treat it as a style, not a type).

Other than that, please also add a dedicated test with a Word file containing an example of legal-style list and multi-level lists.

There are already Word files which contain all kinds of multi list (legal lists included). In case with legal list our logic adds legal-list class, and current test modification cover that case as other cases with multi level (not legal) list which should have behaviour as previously.

[Witoso]

Should we leak this class if someone has not enabled Multi-level list plugin? I feel this may be unintended in a case when a plugin is not used.