normalize value for search label translation

[floriangantner]

References

• Fixes search labels not translated #12

Description

normalize filter value for translation of applied search labels

Instructions for Reviewers

List of changes in this PR:

• remove double stripped/normalized Filter method
• apply normalization for translation keys

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[floriangantner]

aligned to 2023.02.02 Release - removed double normalization of FilterValue

[floriangantner]

in my opinion the improvement can also be applied tot 2023.02.02 upward releases