[GR-60806] The Truffle Profiler somtimes incorrectly skips tiers in calltree mode

[simonis]

The Truffle Profiler somtimes incorrectly skips tiers in calltree mode. Taking a "calltree" profile of the Truffle program from ProfilerCLITest::runSampler() currently looks as follows:

Sampling Call Tree. Recorded 113 samples with period 10ms. Missed 40 samples.
  Self Time: Time spent on the top of the stack.
  Total Time: Time spent somewhere on the stack.
  T0: Percent of time spent in interpreter.
  T2: Percent of time spent in code compiled by tier 2 compiler.
----------------------------------------------------------------------------------------------------------------------------------
 Name       ||             Total Time    |   T0   |   T2   ||              Self Time    |   T0   |   T2   || Location             
----------------------------------------------------------------------------------------------------------------------------------
            ||             1130ms 100.0% | 100.0% |   0.0% ||                0ms   0.0% |   0.0% |   0.0% || test~1:0-161
  baz       ||             1030ms  91.2% |  32.0% |  58.3% ||                0ms   0.0% |   0.0% |   0.0% || test~1:98-139
   bar      ||             1030ms  91.2% |   4.9% |  93.2% ||                0ms   0.0% |   0.0% |   0.0% || test~1:43-84
    foo     ||             1030ms  91.2% |   0.0% |  99.0% ||             1030ms  91.2% |   0.0% |  99.0% || test~1:16-29
  bar       ||              100ms   8.8% |   0.0% | 100.0% ||                0ms   0.0% |   0.0% |   0.0% || test~1:43-84
   foo      ||              100ms   8.8% |   0.0% | 100.0% ||              100ms   8.8% |   0.0% | 100.0% || test~1:16-29
----------------------------------------------------------------------------------------------------------------------------------

As you can see, the profile doesn't contain a column for time spent in code compiled by the tier 1 compiler. This is wrong and manifests e.g. in the line:

 baz       ||             1030ms  91.2% |  32.0% |  58.3% ||                0ms   0.0% |   0.0% |   0.0% || test~1:98-139

Where the time spent in the interpreter (32.0%) and the time spent in code compiled by the tier 2 compiler (58.3%) only add up to 90.3% instead of 100% if there was really no time spent in code compiled by the tier 1 compiler.