radeonsi: update buffer descriptors in all contexts after buffer invalidation

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=108824



Cc: 19.1 <mesa-stable@lists.freedesktop.org>
(cherry picked from commit 78e35df5)
[Juan: resolve trivial conflicts]
[Juan: remove the commit from the ignored cherry-pick]
Signed-off-by: Juan A. Suarez Romero <jasuarez@igalia.com>

Conflicts:
	src/gallium/drivers/radeonsi/si_state_draw.c