[Feature] Updates to inventory icons, context menus, action use, and observer visibility (#1814)

* Update inventory controls and permissions filtering

* Also disable prosemirror editors

* Address context menu deprecation warnings

* Fix context menu detection for actions

* Refine logic for use action when hovering over item icon

styles/less/sheets/actors/character/sheet.less

@@ -11,21 +11,6 @@
         padding-bottom: 0;
         overflow-x: auto;
 
-        &.viewMode {
-            button:not(.btn-toggle-view),
-            input:not(.search),
-            .controls,
-            .character-sidebar-sheet,
-            .img-portait,
-            .name-row,
-            .hope-section,
-            .downtime-section,
-            .character-traits,
-            .card-list {
-                pointer-events: none;
-            }
-        }
-
         .character-sidebar-sheet {
             grid-row: 1 / span 2;
             grid-column: 1;