Fix: Stable update info polling (#872)

* adjusted sleep between polls to always sleep at least 2s

* fixed tooltip formatting when no updates available

---------

Co-authored-by: Mara <mara.dawn69@gmail.com>

scripts/checkUpdates.sh

@@ -13,9 +13,13 @@ has_param() {
 
 wait_for_process_to_finish() {
     local process_name="$1"
-    while pgrep -a "$process_name" >/dev/null; do 
-        sleep 0.1
+    local pid
+
+    while pid=$(pgrep -x "$process_name"); do
+        wait "$pid" 2>/dev/null || true
     done
+
+    sleep 2
 }
 
 check_arch_updates() {

src/components/bar/modules/updates/index.tsx

@@ -34,7 +34,7 @@ const processUpdateCount = (updateCount: string): string => {
 
 const processUpdateTooltip = (updateTooltip: string, updateCount: Variable<string>): string => {
     const defaultTooltip = updateCount.get() + ' updates available';
-    if (!extendedTooltip.get()) return defaultTooltip;
+    if (!extendedTooltip.get() || !updateTooltip) return defaultTooltip;
     return defaultTooltip + '\n\n' + updateTooltip;
 };