ui: fix advance setting behaviour in autoscale form

Fixes apache#11269

The current dysfunctional behaviour was introduced in apache#6571. In advanced
settings interface for ssh keypairs, userdata, affinity group, etc are
show but the toggle to show/hide them was not working correctly.

Signed-off-by: Abhishek Kumar <abhishek.mrt22@gmail.com>

Author: shwstppr

ui/src/views/compute/CreateAutoScaleVmGroup.vue

@@ -738,7 +738,7 @@
                     {{ $t('label.isadvanced') }}
                     <a-switch v-model:checked="showDetails" style="margin-left: 10px"/>
                   </span>
-                  <div style="margin-top: 15px" v-show="showDetails">
+                  <div style="margin-top: 15px" v-if="showDetails">
                     <a-form-item :label="$t('label.sshkeypairs')">
                       <ssh-key-pair-selection
                         :items="options.sshKeyPairs"