Improve logging view performance to prevent browser freezing

- Use CSS content-visibility: auto for lazy rendering of off-screen log lines
- Replace setInterval auto-scroll with requestAnimationFrame for smoother scrolling
- Cache HTML entity decoding to avoid repeated DOMParser calls (up to 5000 entries)
- Cache match count calculations to prevent repeated DOM queries
- Debounce search input (300ms) in deployment logs view
- Debounce Livewire render updates (100ms) to batch rapid changes
- Add log-line utility class with content-visibility optimization
- Add log-highlight utility class for search result highlighting

These changes address browser freezing when viewing deployment logs with
3500+ lines (GitHub issue #7668). The content-visibility CSS property lets
the browser skip rendering of off-screen content, significantly reducing
initial render time and memory usage.

Fixes #7668

resources/css/utilities.css

@@ -292,3 +292,14 @@
 @utility xterm {
     @apply p-2;
 }
+
+/* Log line optimization - uses content-visibility for lazy rendering of off-screen log lines */
+@utility log-line {
+    content-visibility: auto;
+    contain-intrinsic-size: auto 1.5em;
+}
+
+/* Search highlight styling for logs */
+@utility log-highlight {
+    @apply bg-warning/40 dark:bg-warning/30 rounded-sm px-0.5;
+}