🔇 fix: Hide Button Icons from Screen Readers (#10776)

If you've got a screen reader that is reading out the whole page,
each icon button (i.e., `<button><SVG></button>`) will have both
the button's aria-label read out as well as the title from the
SVG (which is usually just "image").

Since we are pretty good about setting aria-labels, we should instead
use `aria-hidden="true"` on these images, since they are not useful
to be read out.

I don't consider this a comprehensive review of all icons in the app,
but I knocked out all the low hanging fruit in this commit.

client/src/components/SidePanel/Bookmarks/BookmarkTable.tsx

@@ -115,7 +115,7 @@ const BookmarkTable = () => {
                   aria-label={localize('com_ui_bookmarks_new')}
                   onClick={() => setOpen(!open)}
                 >
-                  <BookmarkPlusIcon className="size-4" />
+                  <BookmarkPlusIcon className="size-4" aria-hidden="true" />
                   <div className="break-all">{localize('com_ui_bookmarks_new')}</div>
                 </Button>
               </OGDialogTrigger>