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FilterRender.getSelectedKeysFilter() method

Returns a lookup map of currently selected filter value keys.

Builds a Record<string, boolean> where keys follow the pattern "filterOptionId-value" (lowercased), used for O(1) selected-state checks during template rendering.

Signature:

getSelectedKeysFilter(): Record<string, boolean>;

Returns:

Record<string, boolean>

Map of selected filter keys to true