Update all strings in the app

[6ajmon]

fix #120

[Copilot]

Pull Request Overview

This PR updates various user-facing strings throughout the application to improve clarity and consistency. Key changes include:

• Changing resource identifiers (e.g., replacing "chat_type_individual" with "chat_type_personal") to align with updated language and business terminology.
• Updating both Polish and English translations in strings.xml files for consistency and improved messaging.
• Refining text in UI components such as chat headers and family group entries.

Reviewed Changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated no comments.

File	Description
composeApp/src/commonMain/kotlin/com/github/familyvault/ui/screens/main/chat/SelectChatContent.kt	Updated import and string resource for chat type.
composeApp/src/commonMain/kotlin/com/github/familyvault/ui/components/FamilyGroupEntry.kt	Updated resource identifier and string resource call for family group status.
composeApp/src/commonMain/composeResources/values-pl/strings.xml	Updated several Polish translation strings for clarity and consistency.
composeApp/src/commonMain/composeResources/values-en/strings.xml	Updated several English translation strings for clarity and consistency.