fix: orbital speed distribution histogram rendering out-of-bounds bars for speeds > 25 km/s

[SourabhX16]

Problem Statement

High-velocity hyperbolic asteroids (>25 km/s) overflow max bin index in SpeedHistogram.tsx, placing data in undefined array index.

Why It Matters

Histogram chart breaks layout or omits fast-moving orbital objects.

Expected Behaviour

Histogram binning logic should include an overflow '25+ km/s' catch-all bin.

Acceptance Criteria

• Histogram includes overflow bin for objects exceeding 25 km/s.
• No undefined index errors in bin distribution calculation.
• Chart layout intact.

Likely Affected Files / Components

• src/components/SpeedHistogram.tsx

[mittalsonal]

Hi maintainers, I would like to work on this issue under GSSoC '26.

Proposed Solution

• Inspect src/components/SpeedHistogram.tsx and identify the current speed-to-bin calculation.
• Add an explicit overflow bucket for speeds above 25 km/s, labelled clearly as 25+ km/s.
• Clamp or route out-of-range speeds into that final bucket so the distribution never writes to an undefined array index.
• Keep the chart layout unchanged apart from the new overflow bin and verify the affected histogram rendering path.

Please assign this to me if it is available.

[SourabhX16]

assigned @mittalsonal