setting min-size to avoid invisible bindings properties view (#1734)

Author: ritamerkl

Packages/com.unity.inputsystem/InputSystem/Editor/UITKAssetEditor/Resources/InputActionsEditorStyles.uss

@@ -7,7 +7,7 @@
 }
 
 .body-panel-container {
-    min-width: auto;
+    min-width: 150px;
     border-top-width: 1px;
     border-left-color: rgb(25, 25, 25);
     border-right-color: rgb(25, 25, 25);