fixes#3251
- Being able to react in timeline chat
- Once there is a reaction, being able to remove them or add new
- Height of the message taking in consideration if there is reaction or
not
This commit introduces some `MouseArea`s so components inside the
`StatusUpdate` component cancel it out by having a higher `z`.
Also, in some cases we need to conditionally set the `root.hovered` property
to ensure the values get inverted correctly, otherwise it causes undesired
flicker effects.
Anthony Laibe
Andrei Smirnov
Pascal Precht
Jonathan Rainville