Correctly handle @Repeatable @SerialInfo annotations on classes

that were affected by deduplication of inherited serial info annotations.

Prohibit combination of @InheritableSerialInfo and @Repeatable.

Fixes https://github.com/Kotlin/kotlinx.serialization/issues/2099

plugins/kotlinx-serialization/testData/diagnostics/repeatableSerialInfo.kt

@@ -0,0 +1,22 @@
+// FIR_DISABLE_LAZY_RESOLVE_CHECKS
+// FIR_IDENTICAL
+// SKIP_TXT
+
+// WITH_STDLIB
+// FULL_JDK
+
+import kotlinx.serialization.*
+
+<!INHERITABLE_SERIALINFO_CANT_BE_REPEATABLE!>@InheritableSerialInfo<!>
+@Target(AnnotationTarget.CLASS, AnnotationTarget.PROPERTY)
+@Repeatable
+annotation class RepeatableSerialInfo(val value: Int)
+
+<!INHERITABLE_SERIALINFO_CANT_BE_REPEATABLE!>@InheritableSerialInfo<!>
+@Target(AnnotationTarget.CLASS, AnnotationTarget.PROPERTY)
+@java.lang.annotation.Repeatable(JavaRepeatableContainer::class)
+annotation class JavaRepeatable(val value2: Int)
+
+@Target(AnnotationTarget.CLASS, AnnotationTarget.PROPERTY)
+annotation class JavaRepeatableContainer(val value: Array<JavaRepeatable>)
+