Heavy refactoring around FileExplorerLeaf and FileExplorerView

- things got even more confusing after observing the logs then...

Author: SebastianMC

package.json

@@ -28,6 +28,7 @@
 		"monkey-around": "^2.3.0",
 		"obsidian": "^0.15.4",
 		"obsidian-1.4.11": "npm:[email protected]",
+		"obsidian-1.7.2": "npm:[email protected]",
 		"ts-jest": "^28.0.5",
 		"tslib": "2.4.0",
 		"typescript": "4.7.4"