[CLI] free cached values

^ KTIJ-24447

analysis/analysis-api-impl-base/src/org/jetbrains/kotlin/analysis/api/impl/base/CachingKtAnalysisSessionProvider.kt

@@ -7,6 +7,7 @@ package org.jetbrains.kotlin.analysis.api.impl.base
 
 import com.intellij.openapi.project.Project
 import com.intellij.openapi.roots.ProjectRootModificationTracker
+import com.intellij.openapi.util.LowMemoryWatcher
 import com.intellij.psi.util.PsiModificationTracker
 import org.jetbrains.annotations.TestOnly
 import org.jetbrains.kotlin.analysis.api.KtAnalysisApiInternals
@@ -61,6 +62,10 @@ private class KtAnalysisSessionCache(project: Project) {
         )
     )
 
+    init {
+        LowMemoryWatcher.register({ cache.clearCachedValues() }, project)
+    }
+
     @TestOnly
     fun clear() {
         cache.clear()