minimal project to cause SCL-20457

Open Main.scala. Start typing. Intellij freezes. CPU at 800-1000%.

Breaks on:

IntelliJ IDEA 2022.2.3 (Ultimate Edition) Build #IU-222.4345.14, built on October 5, 2022

Runtime version: 17.0.4.1+7-b469.62 aarch64 VM: OpenJDK 64-Bit Server VM by JetBrains s.r.o. macOS 13.0 GC: G1 Young Generation, G1 Old Generation Memory: 14336M Cores: 10 Metal Rendering is ON Registry: typescript.service.node.arguments=--max_old_space_size=4096 scala.erase.compiler.process.jdk.once=false

Non-Bundled Plugins: org.jetbrains.plugins.hocon (2022.1.0) org.jetbrains.kotlin (222-1.7.20-release-201-IJ4167.29) PlantUML integration (5.19) intellij.prettierJS (222.4345.14) com.dmarcotte.handlebars (222.4345.14) org.intellij.scala (2022.2.683)

Kotlin: 222-1.7.20-release-201-IJ4167.29