Style: Update Edit Bookmark dialog to use Zen colors

Updates the Edit Bookmark dialog to use the new Zen color variables for the dropdown and suggestion list backgrounds. This ensures consistency with the overall Zen theme and improves visual appeal.

Specifically, the `--in-content-box-background` variable is replaced with `--zen-colors-tertiary` for the affected elements. Additionally, padding in the suggestion list and its items has been slightly adjusted for better spacing.

src/browser/themes/shared/places/editBookmark-css.patch

@@ -1,5 +1,5 @@
 diff --git a/browser/themes/shared/places/editBookmark.css b/browser/themes/shared/places/editBookmark.css
-index 4c00982e620f4cfd5aa1d97d45a276f5d41d0d74..b75aa721e75cd3a3e707d1a69fca08d6741746a4 100644
+index 4c00982e620f4cfd5aa1d97d45a276f5d41d0d74..cc4be5f91860383045d7560b34621c53fccc9bf3 100644
 --- a/browser/themes/shared/places/editBookmark.css
 +++ b/browser/themes/shared/places/editBookmark.css
 @@ -158,3 +158,69 @@
@@ -24,7 +24,7 @@ index 4c00982e620f4cfd5aa1d97d45a276f5d41d0d74..b75aa721e75cd3a3e707d1a69fca08d6
 +  padding: 8px 12px;
 +  border: 1px solid var(--card-outline-color);
 +  border-radius: 4px;
-+  background-color: var(--in-content-box-background);
++  background-color: var(--zen-colors-tertiary);
 +  cursor: pointer;
 +}
 +
@@ -49,10 +49,10 @@ index 4c00982e620f4cfd5aa1d97d45a276f5d41d0d74..b75aa721e75cd3a3e707d1a69fca08d6
 +  overflow-y: auto;
 +  border: 1px solid var(--card-outline-color);
 +  border-top: none;
-+  background-color: var(--in-content-box-background);
++  background-color: var(--zen-colors-tertiary);
 +  box-shadow: 0px 4px 6px rgba(0, 0, 0, 0.1);
 +  z-index: 1000;
-+  padding: 8px 0;
++  padding: 4px 0;
 +  border-radius: 0 0 4px 4px;
 +}
 +
@@ -65,7 +65,7 @@ index 4c00982e620f4cfd5aa1d97d45a276f5d41d0d74..b75aa721e75cd3a3e707d1a69fca08d6
 +li > label {
 +  display: flex;
 +  align-items: center;
-+  padding: 8px 12px;
++  padding: 4px 12px;
 +  cursor: pointer;
 +}
 +