🐛 Fixed size of the time input fields in publish and post settings menus

no issue
- moving the time input to use `{{gh-text-input}}` meant that the input gained the `.gh-input` class which messed with the combined date/time input styling
- switched back to plain `<input type="text">` to get rid of the extra class

ghost/admin/app/templates/components/gh-date-time-picker.hbs

@@ -19,13 +19,14 @@
     {{/power-datepicker}}
 
     <div class="gh-date-time-picker-time {{if hasError "error"}}">
-        {{gh-text-input
-            value=(readonly _time)
-            input=(action (mut _time) value="target.value")
-            focus-out=(action "setTime" _time)
-            disabled=disabled
-            data-test-date-time-picker-time-input=true
-        }}
+        <input
+            type="text"
+            value={{_time}}
+            disabled={{disabled}}
+            oninput={{action (mut _time) value="target.value"}}
+            onblur={{action "setTime" _time}}
+            data-test-date-time-picker-time-input
+        >
         <small class="gh-date-time-picker-timezone">({{timezone}})</small>
     </div>
 </div>