use tabler as the default theme

Author: pxpm

src/app/Console/Commands/Install.php

@@ -311,14 +311,14 @@ private function installTheme()
             }, 0);
 
         $total = 0;
-        $input = (int) $this->listChoice('Which Backpack theme would you like to install? <fg=gray>(enter option number: 1, 2 or 3)</>', $this->themes()->toArray());
-
+        $input = (int) $this->listChoice('Which Backpack theme would you like to install? <fg=gray>(enter option number: 1, 2 or 3)</>', $this->themes()->toArray(), 1);
+        
         if ($input < 1 || $input > $this->themes()->count()) {
             $this->deleteLines(3);
-            $this->note('Skipping installing a theme.');
+            $this->note('Unknown theme. Using default theme value.');
             $this->newLine();
 
-            return;
+            $input = 1;
         }
 
         // Clear list