fix(pv): poll locking in voting interface

the previous implementation used either in separate cases, causing some
features to appear locked but not others (upon lock update)

unify use of v.pollCopy.locked, replacing v.pollLocked in all cases

Author: boka-slickage

src/components/posts/PollViewer.vue

@@ -4,13 +4,13 @@
     <div class="poll-title">
       <span class="poll-title-text">
         Poll
-        <span class="is_locked" v-if="pollLocked">(Locked)</span>
+        <span class="is_locked" v-if="pollCopy.locked">(Locked)</span>
       </span>
       <div class="poll-controls">
         <!-- Poll Controls -->
         <!-- TODO(boka): data-balloon="Lock Poll" data-balloon-pos="down" -->
-        <div class="poll-control" v-if="canLock()" :class="{'is_locked' : pollLocked}">
-          <input id="lockPoll" class="icon" type="checkbox" v-model="pollLocked">
+        <div class="poll-control" v-if="canLock()" :class="{'is_locked' : pollCopy.locked}">
+          <input id="lockPoll" class="icon" type="checkbox" v-model="pollCopy.locked">
           <label for="lockPoll"  @click="updateLockPoll()">
             <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 48 48">
               <title></title>
@@ -209,7 +209,7 @@ export default {
       console.log('PollViewer removeVote')
     }
     const updateLockPoll = () => {
-      if(v.pollLocked) {
+      if(v.pollCopy.locked) {
         pollsApi.unlock(props.thread.id, props.poll.id)
       }
       else {
@@ -256,7 +256,6 @@ export default {
       },
       editPoll: false,
       pollAnswers: [],
-      pollLocked: props.poll.locked,
       pollCopy: cloneDeep(props.poll)
     })
     /* Data Initialization */