Support distance joins for raster predicates

[jiayuasu]

Description

Distance joins (ST_DWithin, ST_Distance < r) are not currently supported when raster predicates are involved. Attempting this combination will throw UnsupportedOperationException.

Root cause

In BroadcastIndexJoinExec.createStreamShapes, when distance is defined, the code always uses GeometrySerializer.deserialize to decode the stream side. If the stream side is a raster, this will fail because raster bytes cannot be deserialized as geometry.

The non-distance path already handles rasters correctly by checking isRasterPredicate and using RasterSerializer.deserialize + JoinedGeometryRaster.rasterToWGS84Envelope.

What needs to happen

• Add raster-aware deserialization in the distance branch of createStreamShapes
• Implement raster envelope expansion by the distance radius (e.g., expand the WGS84 envelope)
• Update the plan string in BroadcastIndexJoinExec and JoinQueryDetector to reflect the supported combination
• Remove the UnsupportedOperationException guards added in [GH-2744] Clean up Maven build logs #2801

References

• BroadcastIndexJoinExec.scala lines 292-311
• JoinQueryDetector.scala lines 786-792