[CA] Support "sigles de" template

[BoboTiG]

Fixes #1522

[sourcery-ai]

Sourcery Code Quality Report

✅  Merging this PR will increase code quality in the affected files by 2.34%.

Quality metrics	Before	After	Change
Complexity	11.10 🙂	9.69 🙂	-1.41 👍
Method Length	46.00 ⭐	45.57 ⭐	-0.43 👍
Working memory	6.94 🙂	6.81 🙂	-0.13 👍
Quality	69.09% 🙂	71.43% 🙂	2.34% 👍

Other metrics	Before	After	Change
Lines	85	97	12

Changed files	Quality Before	Quality After	Quality Change
wikidict/lang/ca/template_handlers.py	69.09% 🙂	71.43% 🙂	2.34% 👍

Here are some functions in these files that still need a tune-up:

File	Function	Complexity	Length	Working Memory	Quality	Recommendation
wikidict/lang/ca/template_handlers.py	render_label	19 😞	97 🙂	8 🙂	56.51% 🙂	Refactor to reduce nesting

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