[IC] Measure IC size metrics after the caches are closed

Before this fix, the size metrics were measured after the compilation is finished, but before the caches are closed. In many cases it might lead to incorrect measurements. After flipping the default value of the `keepIncrementalCompilationCachesInMemory` flag for Gradle builds, it started to cause always incorrect results.
^KT-63010 In Progress

compiler/incremental-compilation-impl/src/org/jetbrains/kotlin/incremental/IncrementalCompilerRunner.kt

@@ -113,7 +113,7 @@ abstract class IncrementalCompilerRunner<
         changedFiles: ChangedFiles?, // When not-null, changes are provided by the build system; otherwise, the IC will need to track them
         fileLocations: FileLocations? = null, // Must be not-null if the build system needs to support build cache relocatability
     ): ExitCode = reporter.measure(GradleBuildTime.INCREMENTAL_COMPILATION_DAEMON) {
-        return when (val result = tryCompileIncrementally(allSourceFiles, changedFiles, args, fileLocations, messageCollector)) {
+        val result = when (val result = tryCompileIncrementally(allSourceFiles, changedFiles, args, fileLocations, messageCollector)) {
             is ICResult.Completed -> {
                 reporter.debug { "Incremental compilation completed" }
                 result.exitCode
@@ -146,6 +146,8 @@ abstract class IncrementalCompilerRunner<
                 )
             }
         }
+        collectSizeMetrics()
+        return result
     }
 
     /** The result when attempting to compile incrementally ([tryCompileIncrementally]). */
@@ -411,11 +413,9 @@ abstract class IncrementalCompilerRunner<
 
     protected open fun performWorkBeforeCompilation(compilationMode: CompilationMode, args: Args) {}
 
-    protected open fun performWorkAfterCompilation(compilationMode: CompilationMode, exitCode: ExitCode, caches: CacheManager) {
-        collectMetrics()
-    }
+    protected open fun performWorkAfterCompilation(compilationMode: CompilationMode, exitCode: ExitCode, caches: CacheManager) {}
 
-    private fun collectMetrics() {
+    private fun collectSizeMetrics() {
         reporter.measure(GradleBuildTime.CALCULATE_OUTPUT_SIZE) {
             reporter.addMetric(
                 GradleBuildPerformanceMetric.SNAPSHOT_SIZE,