Fix error with LiteralExpression

Author: Vlad Vladov

src/main/kotlin/space/whitememory/pythoninlayparams/types/AbstractPythonInlayTypeHintsCollector.kt

@@ -43,7 +43,7 @@ abstract class AbstractPythonInlayTypeHintsCollector(editor: Editor) :
         separator: String = " | ",
         limit: Int? = 3
     ): InlayPresentation {
-        val convertedInlayInfoDetails = infoDetails.map { getInlayPresentationForInlayInfoDetails(it) }
+        val convertedInlayInfoDetails = infoDetails.distinct().map { getInlayPresentationForInlayInfoDetails(it) }
 
         return factory.seq(*separatePresentation(convertedInlayInfoDetails, separator, limit).toTypedArray())
     }

src/main/kotlin/space/whitememory/pythoninlayparams/types/hints/HintGenerator.kt

@@ -252,4 +252,20 @@ data class InlayInfoDetails(
 sealed class InlayInfoDetail(val text: String)
 
 class TextInlayInfoDetail(text: String) : InlayInfoDetail(text)
-class PsiInlayInfoDetail(text: String, val element: PsiElement) : InlayInfoDetail(text)
+class PsiInlayInfoDetail(text: String, val element: PsiElement) : InlayInfoDetail(text) {
+    override fun equals(other: Any?): Boolean {
+        if (this === other) return true
+
+        if (other !is PsiInlayInfoDetail) return false
+
+        if (text != other.text) return false
+
+        if (element != other.element) return false
+
+        return true
+    }
+
+    override fun hashCode(): Int {
+        return element.hashCode()
+    }
+}