BreakpointsChangeEvent doesn't contain the new location of breakpoint when newlines are added

[jramsay]

VSCode Version: 1.21.0-insider
OS Version: Windows 10 Enterprise
VS Live Share: 0.2.163

Scenario: a VS Live Share session between a host & a guest where they’re both editing a doc and configuring BPs before launching the debugger.

Steps:
• The host has existing BPs set and shares their project with the guest.
• The guest joins the session and adds a few new lines above a line with a BP and then edits the existing BP (ex: changes hit count from 1 to 4)

When the new line is added VS Live Share's breakpointManager's onDidChangeBreakpoints is triggered with a changed event. This changed event has the locations of the old breakpoints but does not appear to contain the new locations.