fix: Correct compose compiler plugin alias

Use jetbrainsComposeCompiler alias to match version catalog.

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Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

desktopApp/build.gradle.kts

@@ -3,7 +3,7 @@ import org.jetbrains.compose.desktop.application.dsl.TargetFormat
 plugins {
     alias(libs.plugins.jetbrainsKotlinJvm)
     alias(libs.plugins.composeMultiplatform)
-    alias(libs.plugins.composeCompiler)
+    alias(libs.plugins.jetbrainsComposeCompiler)
 }
 
 dependencies {