[FIR] Mark more calls origin as OPERATOR

compiler/fir/resolve/src/org/jetbrains/kotlin/fir/resolve/calls/ResolutionStages.kt

@@ -276,6 +276,8 @@ internal object CheckCallModifiers : CheckerStage() {
                     sink.reportDiagnostic(InfixCallOfNonInfixFunction(functionSymbol))
                 callInfo.callSite.origin == FirFunctionCallOrigin.OPERATOR && !functionSymbol.fir.isOperator ->
                     sink.reportDiagnostic(OperatorCallOfNonOperatorFunction(functionSymbol))
+                callInfo.isImplicitInvoke && !functionSymbol.fir.isOperator ->
+                    sink.reportDiagnostic(OperatorCallOfNonOperatorFunction(functionSymbol))
             }
         }
     }

compiler/fir/resolve/src/org/jetbrains/kotlin/fir/resolve/dfa/contracts/ConeConditionalEffectToFirVisitor.kt

@@ -51,6 +51,7 @@ private class ConeConditionalEffectToFirVisitor(
         return buildFunctionCall {
             calleeReference = buildSimpleNamedReference { name = OperatorNameConventions.NOT }
             this.explicitReceiver = explicitReceiver
+            origin = FirFunctionCallOrigin.OPERATOR
         }
     }