FIR: fix EXPRESSION_REQUIRED positioning

compiler/fir/checkers/checkers-component-generator/src/org/jetbrains/kotlin/fir/checkers/generator/diagnostics/FirDiagnosticsList.kt

@@ -36,7 +36,7 @@ object DIAGNOSTICS_LIST : DiagnosticList() {
     val GENERAL_SYNTAX by object : DiagnosticGroup("General syntax") {
         val ILLEGAL_CONST_EXPRESSION by error<FirSourceElement, PsiElement>()
         val ILLEGAL_UNDERSCORE by error<FirSourceElement, PsiElement>()
-        val EXPRESSION_REQUIRED by error<FirSourceElement, PsiElement>()
+        val EXPRESSION_REQUIRED by error<FirSourceElement, PsiElement>(PositioningStrategy.SELECTOR_BY_QUALIFIED)
         val BREAK_OR_CONTINUE_OUTSIDE_A_LOOP by error<FirSourceElement, PsiElement>()
         val NOT_A_LOOP_LABEL by error<FirSourceElement, PsiElement>()
         val VARIABLE_EXPECTED by error<FirSourceElement, PsiElement>()

compiler/fir/checkers/gen/org/jetbrains/kotlin/fir/analysis/diagnostics/FirErrors.kt

@@ -55,7 +55,7 @@ object FirErrors {
     // General syntax
     val ILLEGAL_CONST_EXPRESSION by error0<FirSourceElement, PsiElement>()
     val ILLEGAL_UNDERSCORE by error0<FirSourceElement, PsiElement>()
-    val EXPRESSION_REQUIRED by error0<FirSourceElement, PsiElement>()
+    val EXPRESSION_REQUIRED by error0<FirSourceElement, PsiElement>(SourceElementPositioningStrategies.SELECTOR_BY_QUALIFIED)
     val BREAK_OR_CONTINUE_OUTSIDE_A_LOOP by error0<FirSourceElement, PsiElement>()
     val NOT_A_LOOP_LABEL by error0<FirSourceElement, PsiElement>()
     val VARIABLE_EXPECTED by error0<FirSourceElement, PsiElement>()

compiler/frontend/src/org/jetbrains/kotlin/diagnostics/PositioningStrategies.kt

@@ -726,7 +726,7 @@ object PositioningStrategies {
         override fun mark(element: PsiElement): List<TextRange> {
             if (element is KtQualifiedExpression) {
                 when (val selectorExpression = element.selectorExpression) {
-                    is KtCallExpression, is KtReferenceExpression -> return mark(selectorExpression)
+                    is KtElement -> return mark(selectorExpression)
                 }
             }
             return super.mark(element)