Fix radar division by zero with invalid map dimensions

[seer-by-sentry]

Fixes CLIENT-2AM. The issue was that: Radar's worldToRadar divides by zero m_xSample or m_ySample when map extent width/height is zero.

• Added checks to ensure radar sample rates (m_xSample, m_ySample) are not zero or negative, defaulting them to 1.0f if invalid.
• Implemented early return conditions in Radar::GetRadarHeight and Radar::GetRadarColor if sample rates are found to be invalid (less than or equal to 0.0f).
• Prevents potential division by zero errors and crashes when processing radar data for maps with invalid or zero dimensions.

This fix was generated by Seer in Sentry, triggered automatically. 👁️ Run ID: 8443235

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