ChatMessage: Use Kirigami.ShadowedRectangle for better performance

9 jobs for chat-message-shadow in 79 minutes and 33 seconds (queued for 93 minutes and 34 seconds)
latest
Status Job ID Name Coverage
  Test
passed #38362
clazy

00:01:12

passed #38363
qmllint

00:00:19

 
  Build
passed #38366
archlinux

00:01:15

passed #38365
debian-sid

00:01:02

passed #38364
neon-bionic

00:01:24

 
  Deploy
passed #38369
android

00:40:50

passed #38367
linux-appimage

00:19:12

passed #38370
mac-osxcross

00:05:27

passed #38368
windows-mxe

00:08:48