Reduce time spent on steiner tree construction in repair_design

[povik]

Describe the bug

@LucasYuki found more than 10 % of gpl runtime on ariane133/nangate45 is in steiner tree construction within this updateParasitics call

OpenROAD/src/rsz/src/RepairDesign.cc

Line 1102 in a46bcb2

estimate_parasitics_->updateParasitics();

.

It might be possible to replace the blanket update with

estimate_parasitics_->ensureWireParasitic(drvr_pin);

to save on runtime without degradation in result.

Expected Behavior

.

Environment

.

To Reproduce

.

Relevant log output

Screenshots

No response

Additional Context

No response