fix sonar warnings

commafeed-client/src/components/sidebar/TreeNode.tsx

@@ -59,7 +59,7 @@ const useStyles = tss
         }
     })
 
-export function TreeNode(props: TreeNodeProps) {
+export function TreeNode(props: Readonly<TreeNodeProps>) {
     const { classes } = useStyles({
         selected: props.selected,
         hasError: props.hasError,

commafeed-client/src/components/sidebar/TreeSearch.tsx

@@ -14,7 +14,7 @@ export interface TreeSearchProps {
     feeds: Subscription[]
 }
 
-export function TreeSearch(props: TreeSearchProps) {
+export function TreeSearch(props: Readonly<TreeSearchProps>) {
     const dispatch = useAppDispatch()
     const { _ } = useLingui()
 

commafeed-client/src/components/sidebar/UnreadCount.tsx

@@ -10,7 +10,12 @@ const useStyles = tss.create(() => ({
     },
 }))
 
-export function UnreadCount(props: { unreadCount: number; showIndicator: boolean }) {
+export function UnreadCount(
+    props: Readonly<{
+        unreadCount: number
+        showIndicator: boolean
+    }>
+) {
     const { classes } = useStyles()
 
     if (props.unreadCount <= 0) return null