Fix compilation

For some reason safe merge allowed to merge incorrect code
Happened at: https://jetbrains.team/p/kt/reviews/16214/files
Review: https://jetbrains.team/p/kt/reviews/16262/timeline

(cherry picked from commit 119d1a73eb2ed13090ca535a0581204909579814)
diff --git a/compiler/fir/checkers/src/org/jetbrains/kotlin/fir/analysis/checkers/expression/FirDataClassCopyUsageWillBecomeInaccessibleChecker.kt b/compiler/fir/checkers/src/org/jetbrains/kotlin/fir/analysis/checkers/expression/FirDataClassCopyUsageWillBecomeInaccessibleChecker.kt
index f0c51bf..42d2c65 100644
--- a/compiler/fir/checkers/src/org/jetbrains/kotlin/fir/analysis/checkers/expression/FirDataClassCopyUsageWillBecomeInaccessibleChecker.kt
+++ b/compiler/fir/checkers/src/org/jetbrains/kotlin/fir/analysis/checkers/expression/FirDataClassCopyUsageWillBecomeInaccessibleChecker.kt
@@ -23,6 +23,7 @@
 import org.jetbrains.kotlin.fir.symbols.impl.FirCallableSymbol
 import org.jetbrains.kotlin.fir.symbols.impl.FirNamedFunctionSymbol
 import org.jetbrains.kotlin.fir.symbols.impl.FirRegularClassSymbol
+import org.jetbrains.kotlin.fir.types.classId
 import org.jetbrains.kotlin.fir.types.toRegularClassSymbol
 import org.jetbrains.kotlin.fir.unwrapSubstitutionOverrides
 import org.jetbrains.kotlin.fir.visibilityChecker