Merge branch 'master' of https://github.com/nasa/openmct into 1.7.5-master

* UI fixes
- Fixed Time Conductor in Snow theme;
- Better overall approach to `c-menu` look-and-feel using filter;
- Fixed duplicate Inspector object icon for drawing objects in Display
Layouts;
- Better layout for snapshots container title to fix erroneous
character problem;
- Fix icon definition for Stop action to use correct class name;
- Added `padding-right` to `c-tree__scrollable`;
- Significant updates and cleanups to Painterro CSS overrides;
- Fix incorrect emphasis on "Cancel" in annotation dialog;
- Fix icon spacing in `__object-label` element of Snapshot dialog
template;
- Fixed left padding in tree view

package.json

@@ -1,6 +1,6 @@
 {
   "name": "openmct",
-  "version": "1.7.4",
+  "version": "1.7.5",
   "description": "The Open MCT core platform",
   "dependencies": {},
   "devDependencies": {