Forced column wrap during the tests of XLSX format.

tests/board_samples/kibom-test.sch

@@ -140,7 +140,7 @@ P 6650 2550
 F 0 "C1" H 6675 2650 50  0000 L CNN
 F 1 "10nF" H 6675 2450 50  0000 L CNN
 F 2 "Capacitor_SMD:C_0603_1608Metric" H 6688 2400 50  0001 C CNN
-F 3 "~" H 6650 2550 50  0001 C CNN
+F 3 "This is a long text, wrap check" H 6650 2550 50  0001 C CNN
 	1    6650 2550
 	1    0    0    -1  
 $EndComp

tests/yaml_samples/int_bom_simple_xlsx_6.kiplot.yaml

@@ -11,6 +11,7 @@ outputs:
       format: XLSX
       xlsx:
         title: ''
+        max_col_width: 20
         logo: false
         hide_pcb_info: true
         hide_stats_info: true