tree-wide: be more careful when passing literal integers to "t" bus message fields
Since we use varargs for sd_message_append() we need to make sure the
parameters we pass are actually 64bit wide, if "t" is used. Hence cast
appropriately if necessary.
I went through the whole tree, and in most cases we got it right, but
there are some cases we missed so far.
Inspired by: #31420
(cherry picked from commit
04a3af3c6d434bcde7118440f13d55c910eb9ba0)
(cherry picked from commit
c0f501c49a3724774f979591fbde9d842997ae89)