[FIR] NO_ACTUAL_CLASS_MEMBER_FOR_EXPECTED_CLASS: report both mismatches and incompatibilites

This commit is a preparation step for KT-59887. For now,
expectActualInlineClass.fir.kt became slightly more verbose. Once is
KT-59887 fixed, the verbosity will go away. Because we won't report
incompatibilites mismatches for ACTUAL_MISSING declarations

Review: https://jetbrains.team/p/kt/reviews/13094/timeline

compiler/fir/checkers/src/org/jetbrains/kotlin/fir/analysis/checkers/declaration/FirExpectActualDeclarationChecker.kt

@@ -179,7 +179,8 @@ object FirExpectActualDeclarationChecker : FirBasicDeclarationChecker() {
 
                 if (nonTrivialIncompatibleMembers.isNotEmpty()) {
                     reporter.reportOn(source, FirErrors.NO_ACTUAL_CLASS_MEMBER_FOR_EXPECTED_CLASS, symbol, nonTrivialIncompatibleMembers, context)
-                } else if (checkingCompatibility.mismatchedMembers.isNotEmpty()) {
+                }
+                if (checkingCompatibility.mismatchedMembers.isNotEmpty()) {
                     reporter.reportOn(source, FirErrors.NO_ACTUAL_CLASS_MEMBER_FOR_EXPECTED_CLASS, symbol, checkingCompatibility.mismatchedMembers, context)
                 }
             }