Exponential Histogram should include minimumExpectedValue in positive buckets

[lenin-jaganathan]

minimumExpectedValue is supposed to be inclusive with respect to buckets included in the histogram, but these test assertions show it's being treated as exclusive with regards to what is included in the bucket counts. I fear we have a bit of a mismatch here trying to use minimumExpectedValue for zeroThreshold because OTLP expects zeroThreshold to be inclusive of what ends up in the zeroCount.

  // ZeroThreshold may be optionally set to convey the width of the zero
  // region. Where the zero region is defined as the closed interval
  // [-ZeroThreshold, ZeroThreshold].

Originally posted by @shakuzen in #3959 (comment)

Current Behaviour
Currently, zeroCount in the exponential histogram includes the minimum expected value. This in turn excludes the minimumExpectedValue from actual distribution.

Expected Behaviour
zeroCount should be exclusive of minimumExpectedValue