Handles static and mixed styles for multiple items in a layout (#2907)

* Show non specific styles when updating multiple item styles
* Save sub object styles to it's domain object
* Layout UI tweak
* Fixes flexible layout bug.
* Fixes font size bug in telemetry view
* Fixes issues with newly places TVOs including transparent properties.
* Fixes #2908
* Say NO to 'transparent' === '__no_value'
- Fixes #2895;
* Ensure styles are correctly applied to domain objects and drawing objects when selected individually
* Ensure none treatment is correctly applied to objects when multple selecting
* Fix intial box border
* Tweaks to c-text-view layout
- Vertically center text;
- Normalize padding;
- Overflow: hidden;

* Tweaks to Clock and Timer layout
- Fixes #2893;
- Vertically center text;
- Normalize padding;
- Overflow: hidden;
- `position: absolute` when in Layout;

Co-authored-by: charlesh88 <charlesh88@gmail.com>
Co-authored-by: Andrew Henry <akhenry@gmail.com>

src/plugins/displayLayout/mixins/objectStyles-mixin.js

@@ -21,12 +21,14 @@
  *****************************************************************************/
 
 import StyleRuleManager from "@/plugins/condition/StyleRuleManager";
+import {getStylesWithoutNoneValue} from "@/plugins/condition/utils/styleUtils";
 
 export default {
     inject: ['openmct'],
     data() {
         return {
-            itemStyle: this.itemStyle
+            itemStyle: undefined,
+            styleClass: ''
         }
     },
     mounted() {
@@ -69,13 +71,8 @@ export default {
             });
         },
         updateStyle(style) {
-            this.itemStyle = style;
-            let keys = Object.keys(this.itemStyle);
-            keys.forEach((key) => {
-                if ((typeof this.itemStyle[key] === 'string') && (this.itemStyle[key].indexOf('transparent') > -1)) {
-                    delete this.itemStyle[key];
-                }
-            });
+            this.itemStyle = getStylesWithoutNoneValue(style);
+            this.styleClass = this.itemStyle && this.itemStyle.isStyleInvisible;
         }
     }
 };