Fix division by zero in power bar GUI updates

[seer-by-sentry]

Fixes CLIENT-1GA. The issue was that: Image height was zero, causing integer division by zero when calculating repeating UI pieces in W3DCommandBarGenExpDraw.

• Added validation checks for center bar image dimensions (width/height) in power bar update functions.
• Prevents potential division by zero errors if image dimensions are zero or negative.
• Applied to Update_Power_Bar_Horizontal, Update_Power_Bar_Horizontal_3_Piece, Update_Power_Bar_Vertical, and Update_Power_Bar_Vertical_3_Piece.

This fix was generated by Seer in Sentry, triggered automatically. 👁️ Run ID: 8129373

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