Introduce gnomeTheme.hideUnifiedExtensions

Closes  #546

README.md

@@ -208,6 +208,10 @@ Optional features can be enabled by creating new `boolean` preferences in `about
 
 	Hide redundant WebRTC indicator since GNOME provides their own privacy icons in the top right.
 
+- **Hide unified extensions button** `gnomeTheme.hideUnifiedExtensions`
+
+	Hide unified extensions button from the navbar, you can also use `extensions.unifiedExtensions.enabled` instead, which is only going to work till Firefox 111.
+
 - **Drag window from headerbar buttons** `gnomeTheme.dragWindowHeaderbarButtons`
 
 	Allow dragging the window from headerbar buttons.

theme/parts/buttons-fixes.css

@@ -293,3 +293,10 @@ button.close {
 	min-height: 24px !important;
 	width: 24px !important;
 }
+
+/* OPTIONAL: Hide unified-extensions-button */
+@supports -moz-bool-pref("gnomeTheme.hideUnifiedExtensions") {
+	#unified-extensions-button {
+		display: none;
+	}
+}