### What this PR does / why we need it?
- In the D node, the max-num-batched-tokens parameter can be set to a
smaller value since the D node processes at most max-num-seqs batches
concurrently. As the profile_run only needs to handle max-num-seqs
sequences at a time, we can safely set max-num-batched-tokens equal to
max-num-seqs. This optimization will help reduce activation memory
consumption.
- Restore the default configuration items for PD separation.
### Does this PR introduce _any_ user-facing change?
### How was this patch tested?
- vLLM version: v0.10.0
- vLLM main:
61dcc280fa
Signed-off-by: underfituu <hzhucong@163.com>
e38fab011d