UI: Clean up XML warnings in layout files

UI/forms/AutoConfigStreamPage.ui

@@ -419,7 +419,7 @@
        <item row="7" column="1">
         <widget class="QPushButton" name="connectAccount2">
          <property name="cursor">
-          <cursorShape>PointingHandCursor</cursorShape>
+          <cursorshape>PointingHandCursor</cursorshape>
          </property>
          <property name="text">
           <string>Basic.AutoConfig.StreamPage.ConnectAccount</string>

UI/forms/OBSBasicSettings.ui

@@ -1303,7 +1303,7 @@
                <item>
                 <widget class="QPushButton" name="connectAccount2">
                  <property name="cursor">
-                  <cursorShape>PointingHandCursor</cursorShape>
+                  <cursorshape>PointingHandCursor</cursorshape>
                  </property>
                  <property name="text">
                   <string>Basic.AutoConfig.StreamPage.ConnectAccount</string>

UI/forms/OBSMissingFiles.ui

@@ -22,6 +22,7 @@
         <size>
          <width>0</width>
          <height>20</height>
+         <width>0</width>
         </size>
        </property>
       </widget>