fix: adjust default font size per platform

[okwasniewski]

PR Description

This PR adjusts default font sizes per platform according to this article: https://www.learnui.design/blog/ios-font-size-guidelines.html

Also addresses this issue: #375

[changeset-bot]

🦋 Changeset detected

Latest commit: 964612b

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 3 packages

Name	Type
react-native-bottom-tabs	Patch
@bottom-tabs/expo-template	Patch
@bottom-tabs/react-navigation	Patch

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[Copilot]

Pull Request Overview

This PR adjusts default font sizes for tab bar labels on iOS platforms to follow iOS UI guidelines, replacing the previous system-calculated default with platform-specific values (10pt for iPhone, 13pt for iPad, 30pt for tvOS).

• Extracts font handling logic into a dedicated TabBarFontSize utility class
• Implements device-specific default font sizes based on iOS design guidelines
• Refactors existing font attribute creation to use the new centralized approach

Reviewed Changes

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

File	Description
TabViewImpl.swift	Removes inline font handling and integrates new TabBarFontSize utility
TabBarFontSize.swift	New utility class providing platform-specific font defaults and attribute creation
PlatformAliases.swift	Adds PlatformFont typealias for cross-platform font compatibility
fancy-papayas-battle.md	Changeset documentation for the font size adjustment

Comments suppressed due to low confidence (2)

packages/react-native-bottom-tabs/ios/TabBarFontSize.swift:86

• The new isFontFamilyAvailable method lacks test coverage and is not used in the current implementation. Consider adding tests or removing if unused.

  static func isFontFamilyAvailable(_ family: String) -> Bool {

packages/react-native-bottom-tabs/ios/PlatformAliases.swift:40

• The new PlatformFont typealias is defined but not used in the current implementation. This suggests incomplete refactoring or dead code.

typealias PlatformFont = NSFont