UI: Fix ffmpeg path browse button not showing

The ffmpeg path browse button would be hidden in the settings.

UI/forms/OBSBasicSettings.ui

@@ -3189,7 +3189,7 @@
                                   </sizepolicy>
                                  </property>
                                  <property name="currentIndex">
-                                  <number>1</number>
+                                  <number>0</number>
                                  </property>
                                  <widget class="QWidget" name="page_7">
                                   <property name="sizePolicy">