Add TDD band support to CIQ 4G Generator with L2300 band configuration, implement non-breaking space stripping in integer parsing, update default band blocks to include L700/L2300, add TDD_BANDS set for conditional UL EARFCN omission, extend 4x4 MIMO mode assignment to L2300, and refactor output column builder to skip UL EARFCN columns for TDD bands
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