Widget width documentation lists outdated numeric values

[rocky9878]

The widget documentation (e.g. https://statamic.dev/widgets/updater) states that the width option accepts numeric percentage values: 25, 33, 50, 66, 75, 100.

However, in Dashboard.vue the numeric values are mapped to 4 responsive size buckets for backward compatibility:

  const legacyMap = {                                                                                                                                                                                                                                                                                
      25: 'sm',                                                                                                                                                                                                                                                                                      
      33: 'sm',   // same result as 25
      50: 'md',                                                                                                                                                                                                                                                                                      
      66: 'md',   // same result as 50
      75: 'lg',                                                                                                                                                                                                                                                                                      
      100: 'full'
  };                                                                                                                                                                                                                                                                                                 

This means 33 and 25 produce identical layouts, as do 66 and 50. The actual supported values are the string sizes sm, md, lg, and full.