ArcGIS classBreaks renderers with no defaultSymbol don't render
features outside the minValue..lastClassMaxValue range. The split
layer WHERE clauses now bound the first group at minValue and cap
the last group at lastClassMaxValue to match this behavior.

For PlowPHL Treated Street Status (minValue=35):
- Before: symbol <= 360 / symbol > 360
- After:  symbol >= 35 AND symbol <= 360 / symbol > 360 AND symbol <= 25000

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>