🐛(export) fix export column NaN

During the export of tables to PDF, columns
with NaN widths were not handled correctly,
leading to export not exporting.
We now take in case NaN columnwidths.
We update the regressions tests to include
this kind of tables.

src/frontend/apps/impress/src/features/docs/doc-export/blocks-mapping/tablePDF.tsx

@@ -135,7 +135,7 @@ export const utilTable = (
   columnWidths: (number | undefined)[],
 ) => {
   const totalColumnWidthKnown = columnWidths.reduce(
-    (sum: number, w) => sum + (w ?? 0),
+    (sum: number, w) => sum + (w && !isNaN(w) ? w : 0),
     0,
   );
   const nbColumnWidthUnknown = columnWidths.filter((w) => !w).length;

src/frontend/apps/impress/src/features/docs/doc-export/mappingDocx.tsx

@@ -22,6 +22,29 @@ export const docxDocsSchemaMappings: DocsExporterDocx['mappings'] = {
     quote: blockMappingQuoteDocx,
     image: blockMappingImageDocx,
     uploadLoader: blockMappingUploadLoaderDocx,
+    table: (block, exporter, nestedLevel, numberedListIndex, children) => {
+      /**
+       * Nan values are not supported, so we need to replace them with undefined
+       * to avoid issues during the export.
+       */
+      const { columnWidths } = block.content;
+      const hasNaN = columnWidths.some(
+        (width) => typeof width === 'number' && Number.isNaN(width),
+      );
+      if (hasNaN) {
+        block.content.columnWidths = columnWidths.map((width) =>
+          typeof width === 'number' && Number.isNaN(width) ? undefined : width,
+        );
+      }
+
+      return docxDefaultSchemaMappings.blockMapping.table(
+        block,
+        exporter,
+        nestedLevel,
+        numberedListIndex,
+        children,
+      );
+    },
   },
   inlineContentMapping: {
     ...docxDefaultSchemaMappings.inlineContentMapping,