Refactor subscription logic and replace quill-sense references with ritor equivalents

- Updated `getCurrentSubscription` and related functions to reflect terminology changes.
- Adjusted subscription levels and access checks to streamline logic.
- Removed unused cases in `getSubLevel` and optimized conditionals for clarity.

components/quillsense/QuillSenseComponent.tsx

@@ -29,7 +29,7 @@ export default function QuillSenseComponent(): React.JSX.Element {
     const subLevel: number = getSubLevel(session)
 
     const isGPTEnabled: boolean = isOpenAIEnabled(session);
-    const isSubTierTwo: boolean = getSubLevel(session) >= 1;
+    const isSubTierTwo: boolean = getSubLevel(session) >= 2;
     const hasAccess: boolean = isGPTEnabled || isSubTierTwo;
 
     const qsOptions: QSOption[] = [
@@ -77,7 +77,7 @@ export default function QuillSenseComponent(): React.JSX.Element {
                 </div>
             </div>
             {
-                isBYOK || subLevel >= 1 ? (
+                isBYOK || subLevel >= 2 ? (
                     <>
                         {view === 'list' ? (
                             <QuillList handleSelectConversation={handleSelectConversation}/>