Stop applying treeCopyHandler extension in analysis environment

This was previously used by ktlint to support autocorrect for some rules,
but is being phased out due to pinterest/ktlint#1981.
detekt should do the same. This has no impact on any core rules, or the
formatting module (since ktlint no longer depends on this extension as of
ktlint v0.50.0).

This will impact third party rule sets, only if:
- they support autocorrect, and
- autocorrect support relies on the treeCopyHandler extension

ktlint rules were updated to remove the dependency on treeCopyHandler, so
affected third party detekt rule sets can do the same.

This is all being caused by upstream changes in Kotlin. There's some very
useful analysis in pinterest/ktlint#2044 that can
be reviewed by anyone affected downstream by this change.

detekt-parser/src/main/kotlin/io/github/detekt/parser/DetektPomModel.kt

@@ -1,44 +1,18 @@
 package io.github.detekt.parser
 
-import io.github.davidburstrom.contester.ConTesterBreakpoint
-import org.jetbrains.kotlin.com.intellij.openapi.extensions.ExtensionPoint
-import org.jetbrains.kotlin.com.intellij.openapi.extensions.Extensions.getRootArea
-import org.jetbrains.kotlin.com.intellij.openapi.project.Project
 import org.jetbrains.kotlin.com.intellij.openapi.util.UserDataHolderBase
 import org.jetbrains.kotlin.com.intellij.pom.PomModel
 import org.jetbrains.kotlin.com.intellij.pom.PomModelAspect
 import org.jetbrains.kotlin.com.intellij.pom.PomTransaction
 import org.jetbrains.kotlin.com.intellij.pom.impl.PomTransactionBase
 import org.jetbrains.kotlin.com.intellij.pom.tree.TreeAspect
-import org.jetbrains.kotlin.com.intellij.psi.impl.source.tree.TreeCopyHandler
 import sun.reflect.ReflectionFactory
 
 /**
- * Adapted from https://github.com/pinterest/ktlint/blob/master/ktlint-core/src/main/kotlin/com/pinterest/ktlint/core/internal/KotlinPsiFileFactory.kt
+ * Adapted from https://github.com/pinterest/ktlint/blob/0.50.0/ktlint-rule-engine/src/main/kotlin/com/pinterest/ktlint/rule/engine/internal/KotlinPsiFileFactory.kt
  * Licenced under the MIT licence - https://github.com/pinterest/ktlint/blob/master/LICENSE
  */
-class DetektPomModel(project: Project) : UserDataHolderBase(), PomModel {
-
-    init {
-        val extension = "org.jetbrains.kotlin.com.intellij.treeCopyHandler"
-        val extensionClass = TreeCopyHandler::class.java.name
-        @Suppress("DEPRECATION")
-        for (extensionArea in listOf(project.extensionArea, getRootArea())) {
-            // Addresses https://github.com/detekt/detekt/issues/4609
-            synchronized(extensionArea) {
-                if (!extensionArea.hasExtensionPoint(extension)) {
-                    ConTesterBreakpoint.defineBreakpoint("DetektPomModel.registerExtensionPoint") {
-                        extensionArea == getRootArea()
-                    }
-                    extensionArea.registerExtensionPoint(
-                        extension,
-                        extensionClass,
-                        ExtensionPoint.Kind.INTERFACE
-                    )
-                }
-            }
-        }
-    }
+object DetektPomModel : UserDataHolderBase(), PomModel {
 
     override fun runTransaction(transaction: PomTransaction) {
         val transactionCandidate = transaction as? PomTransactionBase

detekt-parser/src/main/kotlin/io/github/detekt/parser/KotlinEnvironmentUtils.kt

@@ -71,7 +71,7 @@ fun createKotlinCoreEnvironment(
         "MockProject type expected, actual - ${projectCandidate.javaClass.simpleName}"
     }
 
-    project.registerService(PomModel::class.java, DetektPomModel(project))
+    project.registerService(PomModel::class.java, DetektPomModel)
 
     return environment
 }