Cleanup: Fix getter warning in Toolbar

[HS0204]

Purpose / Description

This change follows Kotlin style recommendations. The goal is to reduce warnings shown in Android Studio.

Fixes

• Fixes part of [Cleanup]: Fix Android Studio Warnings #13282

Approach

• Used Kotlin property access syntax instead of Java-style getter methods.
• Followed Kotlin idiomatic style where data access looks like a property.

How Has This Been Tested?

I ran the app on an emulator and confirmed that the toolbar is displayed correctly.

Learning (optional, can help others)

N/A

Checklist

• You have a descriptive commit message with a short title (first line, max 50 chars).
• You have commented your code, particularly in hard-to-understand areas
• You have performed a self-review of your own code
• UI changes: include screenshots of all affected screens (in particular showing any new or changed strings)
• UI Changes: You have tested your change using the Google Accessibility Scanner

[lukstbit]

Thank you!