vgsp-gr r595b: bound the stream-order guard to a settle window, then forward (never refuse)

With r595 the relocation copies execute within 0.5-1.5 s, but the r590b
watermark deferred through the shared 15 s cap; by then the r541/r583
dstpend guard took its fail-closed branch and refused a launch whose
data was already on its way (r596 mail MAILDUMP zeros, 2 refusals).

Track the settle start per push VA and defer only for
gsp_phys_gr_cewm_settle_ms (default 2000). Each deferral is one pump
pass and the pump drains the copy rings before the launching channel, so
the window is enough for the r595 copies; after it the launch forwards
with a witness. The guard can no longer reach any cap-refusal branch.

0 files changed, 0 insertions, 0 deletions