workspace: Move the click action to show the workspace to the background

Since the wallpaper is now being shown slightly smaller than the
Workspace actor itself, there's now a small area around the background
that's still clickable, closing the overview and showing the workspace.
We only want the background to be clickable though, so move the
ClickAction to the background actor and make that actor reactive
instead of the Workspace.
11 jobs for !1689 with make-workspace-background-smaller in 2 minutes and 53 seconds (queued for 1 second)
detached
Status Job ID Name Coverage
  Pre Review
passed #1165357
check_commit_log

00:00:16

passed #1165358
check-merge-request

00:00:26

 
  Prep
passed #1165359
build-fedora-container

00:00:32

 
  Review
passed #1165361
eslint

00:00:47

passed #1165362
eslint_mr

00:00:45

passed #1165360
js_check

00:00:26

passed #1165364
no_template_check

00:00:12

passed #1165363
potfile_check

00:00:23

 
  Build
passed #1165365
build

00:01:51

passed #1165366
flatpak
flatpak

00:01:36

 
  Test
passed #1165367
test

00:00:44