[PERF2BOLT] Print a better message if perf.data lacks LBR

Summary:
If processing the perf.data in LBR mode but the data was
collected without -j, currently we confusingly report all samples
to mismatch the input binary, even though the samples match but
lack LBR info. Change perf2bolt to detect this scenario and print
a helpful message instructing the user to collect data with LBR.

(cherry picked from FBD14817732)