[FIR] Prohibit suspend anonymous functions in statement position

^KT-62018 Fixed
^KT-62019

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

@@ -516,6 +516,8 @@ object DIAGNOSTICS_LIST : DiagnosticList("FirErrors") {
 
         val NO_EXPLICIT_RETURN_TYPE_IN_API_MODE by error<KtDeclaration>(PositioningStrategy.DECLARATION_NAME)
         val NO_EXPLICIT_RETURN_TYPE_IN_API_MODE_WARNING by warning<KtDeclaration>(PositioningStrategy.DECLARATION_NAME)
+
+        val ANONYMOUS_SUSPEND_FUNCTION by error<KtDeclaration>(PositioningStrategy.SUSPEND_MODIFIER)
     }
 
     val VALUE_CLASSES by object : DiagnosticGroup("Value classes") {

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

@@ -66,6 +66,7 @@ enum class PositioningStrategy(private val strategy: String? = null) {
     LATEINIT_MODIFIER,
     INLINE_OR_VALUE_MODIFIER,
     INNER_MODIFIER,
+    SUSPEND_MODIFIER,
     SELECTOR_BY_QUALIFIED,
     REFERENCE_BY_QUALIFIED,
     REFERENCED_NAME_BY_QUALIFIED,