make the brush discard dialogue more clear

change text from 'Yes' to 'Discard changes and switch brush'

static/brush-box.js

@@ -178,11 +178,15 @@ export class BrushBox extends HTMLElement {
 
                     confirmation.addHtmlP(
                         "<strong>Your brush has unsaved changes.</strong>" +
-                            "<br>Loading another brush will discard them." +
+                            "<br>Switching to another brush will discard them." +
                             "<br>Are you sure?",
                     );
                     confirmation.addSeparator();
-                    confirmation.addButton("Yes").addEventListener("click", () => {
+                    confirmation
+                        .addButton("Discard changes and switch brush", {
+                            classList: ["destructive"],
+                        })
+                        .addEventListener("click", () => {
                             this.#sendBrushChange(preset);
                         });
                     confirmation.addHtmlP("Click anywhere else to cancel", {