New IC: Add constants-in-companion-objects impact computation

When computing impacted symbols of changed symbols, previously we
considered only the supertypes-inheritors type of impact, which is the
most common type. This commit adds the constants-in-companion-objects
type of impact to address KT-53266.

We've also cleaned up impact computation to make it easier to add new
types of impact in the future.

^KT-53266 In progress

compiler/incremental-compilation-impl/test/org/jetbrains/kotlin/incremental/classpathDiff/ClasspathChangesComputerTest.kt

@@ -217,6 +217,9 @@ class KotlinOnlyClasspathChangesComputerTest : ClasspathChangesComputerTest() {
         val changes = computeClasspathChanges(File(testDataDir, "KotlinOnly/testConstantsAndInlineFunctions/src"), tmpDir)
         Changes(
             lookupSymbols = setOf(
+                LookupSymbol(name = "constantChangedType", scope = "com.example.SomeClass"),
+                LookupSymbol(name = "constantChangedValue", scope = "com.example.SomeClass"),
+
                 LookupSymbol(name = "constantChangedType", scope = "com.example.SomeClass.CompanionObject"),
                 LookupSymbol(name = "constantChangedValue", scope = "com.example.SomeClass.CompanionObject"),
 

compiler/incremental-compilation-impl/test/org/jetbrains/kotlin/incremental/classpathDiff/ClasspathSnapshotTestCommon.kt

@@ -12,6 +12,8 @@ import org.jetbrains.kotlin.incremental.classpathDiff.ClasspathSnapshotTestCommo
 import org.jetbrains.kotlin.incremental.classpathDiff.ClasspathSnapshotTestCommon.CompileUtil.compile
 import org.jetbrains.kotlin.incremental.classpathDiff.ClasspathSnapshotTestCommon.CompileUtil.compileAll
 import org.jetbrains.kotlin.incremental.classpathDiff.ClasspathSnapshotTestCommon.SourceFile.KotlinSourceFile
+import org.jetbrains.kotlin.incremental.storage.fromByteArray
+import org.jetbrains.kotlin.incremental.storage.toByteArray
 import org.jetbrains.kotlin.test.KotlinTestUtils
 import org.junit.Rule
 import org.junit.rules.TemporaryFolder
@@ -25,7 +27,11 @@ abstract class ClasspathSnapshotTestCommon {
 
     // Use Gson to compare objects
     private val gson by lazy { GsonBuilder().setPrettyPrinting().create() }
-    protected fun Any.toGson(): String = gson.toJson(this)
+    protected fun ClassSnapshot.toGson(): String = gson.toJson(
+        // Serialize and deserialize the object to unset lazy properties' values as they are not essential and can add noise when comparing
+        // objects
+        ClassSnapshotExternalizer.fromByteArray(ClassSnapshotExternalizer.toByteArray(this))
+    )
 
     sealed class SourceFile(val baseDir: File, relativePath: String) {
         val unixStyleRelativePath: String