Fix enclosed tessellation recovery for numerically degenerate Voronoi partitions

[yu-ta-sato]

Description

This PR changes the retry order for momepy.enclosed_tessellation failures so that TypeError from boundary simplification first retries with grid_size=1e-3, before falling back to simplify=False. The coarser grid size repairs the underlying partition in the observed real-data failure case, while simplify=False can allow degenerate overlapping cells to pass through.

It also adds validation for overfilled enclosures after tessellation generation. For each enclosure, the total cell area is checked against enclosure_area * 1.05. If cells exceed that tolerance, the tessellation is treated as degenerate:

• retry once with grid_size=1e-3 when the caller has not pinned grid_size
• drop persistently degenerate enclosure cells with a warning
• preserve existing empty-tessellation handling for momepy failures

Regression coverage was added for:

• TypeError retrying with grid_size=1e-3
• fallback to simplify=False when the grid-size retry still fails
• silent overlapping-cell degeneration being detected and repaired
• persistently overlapping enclosure cells being dropped

Related Issues

N/A

Checklist

• I have read the Contributing Guide.
• I have updated the documentation, if necessary.
• I have added tests to cover my changes.
• All new and existing tests passed.
• Pre-commit checks passed locally.