fix(license): remove cascading commercial-use bit encoding, clarify Allow Selling label (#941)

- _resolve_commercial_bits() no longer has Sell-implies-Image
  cascading; each CommercialUse value sets only its own bit,
  matching CivitAI's modern array-format API.
- Keep filter tag label as 'Allow Selling' for brevity; add
  title/tooltip 'Allow selling generated images' on hover.
- Same tooltip treatment for 'No Credit Required'.
- Add i18n keys for both tooltips across all 10 locales.

vue-widgets/src/components/lora-pool/sections/LicenseSection.vue

@@ -5,7 +5,7 @@
     </div>
     <div class="section__toggles">
       <label class="toggle-item">
-        <span class="toggle-item__label">No Credit Required</span>
+        <span class="toggle-item__label" title="Use the model without crediting the creator">No Credit Required</span>
         <button
           type="button"
           class="toggle-switch"
@@ -20,7 +20,7 @@
       </label>
 
       <label class="toggle-item">
-        <span class="toggle-item__label">Allow Selling</span>
+        <span class="toggle-item__label" title="Allow selling generated images">Allow Selling</span>
         <button
           type="button"
           class="toggle-switch"