✨ refactor: pricing filters for dynamic counting & cleaner logic

This commit introduces a unified, maintainable solution for all model-pricing filter buttons and removes redundant code.

Key points
• Added `usePricingFilterCounts` hook
  - Centralises filtering logic and returns:
    - `quotaTypeModels`, `endpointTypeModels`, `dynamicCategoryCounts`, `groupCountModels`
  - Keeps internal helpers private (removed public `modelsAfterCategory`).

• Updated components to consume the new hook
  - `PricingSidebar.jsx`
  - `FilterModalContent.jsx`

• Improved button UI/UX
  - `SelectableButtonGroup.jsx` now respects `item.disabled` and auto-disables when `tagCount === 0`.
  - `PricingGroups.jsx` counts models per group (after all other filters) and disables groups with zero matches.
  - `PricingEndpointTypes.jsx` enumerates all endpoint types, computes filtered counts, and disables entries with zero matches.

• Removed obsolete / duplicate calculations and comments to keep components lean.

The result is consistent, real-time tag counts across all filter groups, automatic disabling of unavailable options, and a single source of truth for filter computations, making future extensions straightforward.

web/src/components/table/model-pricing/layout/PricingSidebar.jsx

@@ -25,6 +25,7 @@ import PricingQuotaTypes from '../filter/PricingQuotaTypes';
 import PricingEndpointTypes from '../filter/PricingEndpointTypes';
 import PricingDisplaySettings from '../filter/PricingDisplaySettings';
 import { resetPricingFilters } from '../../../../helpers/utils';
+import { usePricingFilterCounts } from '../../../../hooks/model-pricing/usePricingFilterCounts';
 
 const PricingSidebar = ({
   showWithRecharge,
@@ -52,6 +53,21 @@ const PricingSidebar = ({
   ...categoryProps
 }) => {
 
+  const {
+    quotaTypeModels,
+    endpointTypeModels,
+    dynamicCategoryCounts,
+    groupCountModels,
+  } = usePricingFilterCounts({
+    models: categoryProps.models,
+    modelCategories: categoryProps.modelCategories,
+    activeKey: categoryProps.activeKey,
+    filterGroup,
+    filterQuotaType,
+    filterEndpointType,
+    searchValue: categoryProps.searchValue,
+  });
+
   const handleResetFilters = () =>
     resetPricingFilters({
       handleChange,
@@ -101,6 +117,7 @@ const PricingSidebar = ({
 
       <PricingCategories
         {...categoryProps}
+        categoryCounts={dynamicCategoryCounts}
         setActiveKey={setActiveKey}
         loading={loading}
         t={t}
@@ -111,7 +128,7 @@ const PricingSidebar = ({
         setFilterGroup={setFilterGroup}
         usableGroup={categoryProps.usableGroup}
         groupRatio={categoryProps.groupRatio}
-        models={categoryProps.models}
+        models={groupCountModels}
         loading={loading}
         t={t}
       />
@@ -119,7 +136,7 @@ const PricingSidebar = ({
       <PricingQuotaTypes
         filterQuotaType={filterQuotaType}
         setFilterQuotaType={setFilterQuotaType}
-        models={categoryProps.models}
+        models={quotaTypeModels}
         loading={loading}
         t={t}
       />
@@ -127,7 +144,8 @@ const PricingSidebar = ({
       <PricingEndpointTypes
         filterEndpointType={filterEndpointType}
         setFilterEndpointType={setFilterEndpointType}
-        models={categoryProps.models}
+        models={endpointTypeModels}
+        allModels={categoryProps.models}
         loading={loading}
         t={t}
       />