[STL] Address API council feedback on ApproachLayoutModifierNode

In aosp/3020232, the intermediateLayout was removed, while
isMeasurementApproachComplete has been changed to
isMeasurementApproachInProgress.

Test: No new test
Bug: 332591722
Flag: NA
Change-Id: I3b33480980331b20f2e6e0f66f03b2e5dcda253b
5 files changed