fix(mobile): reverse log message numbering

Previously, the items in the log page were numbered starting with `#0`
and increasing from top to bottom. Being new to the app, this confused
me because I would have expected that newer messages have a higher
number than older messages.

Initially, I had planned to just start counting from the bottom (i.e. the
oldest message would be `#0`), but I guess the auto-increment ID of the
message would be even better as it isn't reused after clearing the logs.
That is, if a number is needed at all...

Since the numbers are no longer related to the total log count, I
removed the same from the title. Instead, I added the message ID to the
details page title.

mobile/lib/shared/views/app_log_detail_page.dart

@@ -189,7 +189,7 @@ class AppLogDetailPage extends HookConsumerWidget {
 
     return Scaffold(
       appBar: AppBar(
-        title: const Text("Log Detail"),
+        title: Text("Log Detail #${logMessage.id}"),
       ),
       body: SafeArea(
         child: ListView(

mobile/lib/shared/views/app_log_page.dart

@@ -69,8 +69,8 @@ class AppLogPage extends HookConsumerWidget {
 
     return Scaffold(
       appBar: AppBar(
-        title: Text(
-          "Logs - ${logMessages.value.length}",
+        title: const Text(
+          "Logs",
           style: const TextStyle(
             fontWeight: FontWeight.bold,
             fontSize: 16.0,
@@ -139,7 +139,7 @@ class AppLogPage extends HookConsumerWidget {
               TextSpan(
                 children: [
                   TextSpan(
-                    text: "#$index ",
+                    text: "#${logMessage.id} ",
                     style: TextStyle(
                       color: isDarkTheme ? Colors.white70 : Colors.grey[600],
                       fontSize: 14.0,