i18n: context-split "Duration"

Request from Chinese translator.

static/app-strings.json

@@ -736,7 +736,8 @@
   "Video": "Video",
   "Video/Audio": "Video/Audio",
   "Document": "Document",
-  "Duration": "Duration",
+  "Duration --[length of audio or video]--": "Duration",
+  "Duration --[period e.g. ban duration]--": "Duration",
   "Long": "Long",
   "Short": "Short",
   "How Fresh": "How Fresh",

ui/component/claimListHeader/view.jsx

@@ -412,7 +412,7 @@ function ClaimListHeader(props: Props) {
                     className={classnames('claim-search__dropdown', {
                       'claim-search__dropdown--selected': durationParam,
                     })}
-                    label={__('Duration')}
+                    label={__('Duration --[length of audio or video]--')}
                     type="select"
                     name="duration"
                     disabled={

ui/component/formFieldDuration/view.jsx

@@ -72,7 +72,7 @@ export default function FormFieldDuration(props: Props) {
       disabled={disabled}
       label={
         <>
-          {label || __('Duration')}
+          {label || __('Duration --[period e.g. ban duration]--')}
           <Icon customTooltipText={__(TOOLTIP)} className="icon--help" icon={ICONS.HELP} tooltip size={16} />
         </>
       }

ui/modal/modalBlockChannel/view.jsx

@@ -236,7 +236,7 @@ export default function ModalBlockChannel(props: Props) {
             )}
 
             <div className="section section--vertical-compact">
-              <label>{__('Duration')}</label>
+              <label>{__('Duration --[period e.g. ban duration]--')}</label>
               <div className="block-modal--values">
                 <fieldset>
                   {getBlockTypeElem(BLOCK.PERMANENT, 'Permanent')}