fix: don't show canvasBackground label when UIOptions.canvasActions.changeViewBackgroundColor is false (#6781)

* fix(components/main-menu): not show canvasBackground

* chore(components/main-menu): add data-testid attr to canvasBackground label

* test(tests/packages/excalidraw): check whether canvasbackground label is rendered when changeviewbackground is false

* test: update snapshots

* fix(tests/packages/excalidraw): change to lowercase canvas background test id

* change to pull request target for size-limit

* Revert "change to pull request target for size-limit"

This reverts commit baf1ca2677.

* Add test

---------

Co-authored-by: Aakansha Doshi <aakansha1216@gmail.com>

src/tests/packages/__snapshots__/excalidraw.test.tsx.snap

@@ -516,6 +516,7 @@ exports[`<Excalidraw/> Test UIOptions prop Test canvasActions should render menu
       style="margin-top: 0.5rem;"
     >
       <div
+        data-testid="canvas-background-label"
         style="font-size: .75rem; margin-bottom: .5rem;"
       >
         Canvas background