Ktor Dependency Update

[kez-lab]

PR Description

Changes Made

• ktor-client-wasm/build.gradle.kts: Added the composeCompiler plugin.
• ktor-client-wasm/composeApp/build.gradle.kts:
  • Applied the composeCompiler plugin.
  • Removed unnecessary code and simplified configurations.
• ktor-client-wasm/gradle/libs.versions.toml: Updated the Compose plugin and Kotlin versions.
• Ktor version change: Updated from 3.0.0-beta-2-eap-920 to 3.0.0-beta-2 for latest version alignment.

Reason for Changes

• Since Kotlin 2.0.0-RC2, the org.jetbrains.kotlin.plugin.compose plugin must be explicitly applied to use Compose Multiplatform. This update aligns the project with the latest Compose Multiplatform requirements.
• Ktor version change: Updated from the EAP version (3.0.0-beta-2-eap-920) to the latest version (3.0.0-beta-2) for better version alignment.