fix: removed pol values and fixed gradle build files to support correct languages

[AsCress]

Fixes #2410
Removes the values/pol/string.xml file and updates the build.gradle.kts file to only support valid languages, as the correct file for Polish language (values/pl/strings.xml) is already present.

Changes

• app/src/main/res/values-pol/string.xml - File removed
• app/build.gradle.kts - resConfig property added

Screenshots / Recordings

N/A

Checklist:

• No hard coding: I have used resources from strings.xml, dimens.xml and colors.xml without hard coding any value.
• No end of file edits: No modifications done at end of resource files strings.xml, dimens.xml or colors.xml.
• Code reformatting: I have reformatted code and fixed indentation in every file included in this pull request.
• No extra space: My code does not contain any extra lines or extra spaces than the ones that are necessary.

[mariobehling]

Thank you. Instead of removing the Polish language entirely, could you just rename it to "pl", please?

[AsCress]

Thank you. Instead of removing the Polish language entirely, could you just rename it to "pl", please?

I've not removed the Polish language. There is already a proper file existing for the polish language, the 'pl' file. I've just removed the redundant 'pol' one, which was causing the issue. I've specified the Polish language in the resConfig property, and the existing 'pl' file is perfectly usable.