Fix ESLint issues

virtweb_frontend/src/dialogs/ConvertDiskImageDialog.tsx

@@ -32,7 +32,7 @@ export function ConvertDiskImageDialog(p: {
 
   const [filename, setFilename] = React.useState(p.image.file_name + ".qcow2");
 
-  const handleFormatChange = async (value?: string) => {
+  const handleFormatChange = (value?: string) => {
     setFormat({ format: value ?? ("QCow2" as any) });
 
     if (value === "QCow2") setFilename(`${p.image.file_name}.qcow2`);
@@ -93,7 +93,7 @@ export function ConvertDiskImageDialog(p: {
           <CheckboxInput
             editable
             label="Sparse file"
-            checked={format.is_sparse === true}
+            checked={format.is_sparse}
             onValueChange={(c) => {
               setFormat({ format: "Raw", is_sparse: c });
             }}
@@ -105,7 +105,9 @@ export function ConvertDiskImageDialog(p: {
           editable
           label="New image name"
           value={filename}
-          onValueChange={(s) => setFilename(s ?? "")}
+          onValueChange={(s) => {
+            setFilename(s ?? "");
+          }}
           size={ServerApi.Config.constraints.disk_image_name_size}
           helperText="The image name shall contain the proper file extension"
         />