fix(next): incorrect active state for partial matches of collection names in sidebar (#11511)

Previously, collections with similar names (e.g., `uploads` and
`uploads-poly`) both appeared active when viewing either collection.

This was due to `pathname.startsWith(href)`, which caused partial
matches.

This update refines the `isActive` logic to prevent partial matches.

test/admin/payload-types.ts

@@ -66,6 +66,7 @@ export interface Config {
   };
   collections: {
     uploads: Upload;
+    'uploads-two': UploadsTwo;
     posts: Post;
     users: User;
     'hidden-collection': HiddenCollection;
@@ -90,6 +91,7 @@ export interface Config {
   collectionsJoins: {};
   collectionsSelect: {
     uploads: UploadsSelect<false> | UploadsSelect<true>;
+    'uploads-two': UploadsTwoSelect<false> | UploadsTwoSelect<true>;
     posts: PostsSelect<false> | PostsSelect<true>;
     users: UsersSelect<false> | UsersSelect<true>;
     'hidden-collection': HiddenCollectionSelect<false> | HiddenCollectionSelect<true>;
@@ -192,6 +194,25 @@ export interface Upload {
     };
   };
 }
+/**
+ * This interface was referenced by `Config`'s JSON-Schema
+ * via the `definition` "uploads-two".
+ */
+export interface UploadsTwo {
+  id: string;
+  title?: string | null;
+  updatedAt: string;
+  createdAt: string;
+  url?: string | null;
+  thumbnailURL?: string | null;
+  filename?: string | null;
+  mimeType?: string | null;
+  filesize?: number | null;
+  width?: number | null;
+  height?: number | null;
+  focalX?: number | null;
+  focalY?: number | null;
+}
 /**
  * This is a custom collection description.
  *
@@ -469,6 +490,10 @@ export interface PayloadLockedDocument {
         relationTo: 'uploads';
         value: string | Upload;
       } | null)
+    | ({
+        relationTo: 'uploads-two';
+        value: string | UploadsTwo;
+      } | null)
     | ({
         relationTo: 'posts';
         value: string | Post;
@@ -611,6 +636,24 @@ export interface UploadsSelect<T extends boolean = true> {
             };
       };
 }
+/**
+ * This interface was referenced by `Config`'s JSON-Schema
+ * via the `definition` "uploads-two_select".
+ */
+export interface UploadsTwoSelect<T extends boolean = true> {
+  title?: T;
+  updatedAt?: T;
+  createdAt?: T;
+  url?: T;
+  thumbnailURL?: T;
+  filename?: T;
+  mimeType?: T;
+  filesize?: T;
+  width?: T;
+  height?: T;
+  focalX?: T;
+  focalY?: T;
+}
 /**
  * This interface was referenced by `Config`'s JSON-Schema
  * via the `definition` "posts_select".