theme: fix jarring background in 'locationlist' for some themes (#2626)

- moonlight
- solarized-dark
- vscode-dark
- vue-dark

Co-authored-by: schips <[email protected]>

src/data/extra/themes/moonlight/palette.json

@@ -239,7 +239,8 @@
         "locationlist" : {
             "node_icon" : {
                 "fg" : "@base#icon#fg"
-            }
+            },
+            "bg" : "@base#content#bg"
         },
         "viewsplit" : {
             "action_button" : {

src/data/extra/themes/solarized-dark/palette.json

@@ -240,7 +240,8 @@
         "locationlist" : {
             "node_icon" : {
                 "fg" : "@base#icon#fg"
-            }
+            },
+            "bg" : "@base#content#bg"
         },
         "viewsplit" : {
             "action_button" : {

src/data/extra/themes/vscode-dark/palette.json

@@ -239,7 +239,8 @@
         "locationlist" : {
             "node_icon" : {
                 "fg" : "@base#icon#fg"
-            }
+            },
+            "bg" : "@base#content#bg"
         },
         "viewsplit" : {
             "action_button" : {

src/data/extra/themes/vue-dark/palette.json

@@ -232,7 +232,8 @@
         "locationlist" : {
             "node_icon" : {
                 "fg" : "@base#icon#fg"
-            }
+            },
+            "bg" : "@base#content#bg"
         },
         "viewsplit" : {
             "action_button" : {