Make all fields optional for HelpForumPost

Unfortunately, the OpenAPI schema of Discourse (https://docs.discourse.org/openapi.json) does not specify the proper type for posts in the "/search.json" response.

There is at least one case where the post name is null (https://help.galaxyproject.org//search.json?q=tags:circos+tool-help%20status:solved) so let's play safe.

client/src/api/schema/schema.ts

@@ -7031,17 +7031,17 @@ export interface components {
              * Avatar Template
              * @description The avatar template of the user.
              */
-            avatar_template: string;
+            avatar_template: string | null;
             /**
              * Blurb
              * @description The blurb of the post.
              */
-            blurb: string;
+            blurb: string | null;
             /**
              * Created At
              * @description The creation date of the post.
              */
-            created_at: string;
+            created_at: string | null;
             /**
              * Id
              * @description The ID of the post.
@@ -7051,27 +7051,27 @@ export interface components {
              * Like Count
              * @description The number of likes of the post.
              */
-            like_count: number;
+            like_count: number | null;
             /**
              * Name
              * @description The name of the post.
              */
-            name: string;
+            name: string | null;
             /**
              * Post Number
              * @description The post number of the post.
              */
-            post_number: number;
+            post_number: number | null;
             /**
              * Topic Id
              * @description The ID of the topic of the post.
              */
-            topic_id: number;
+            topic_id: number | null;
             /**
              * Username
              * @description The username of the post author.
              */
-            username: string;
+            username: string | null;
             [key: string]: unknown | undefined;
         };
         /**

lib/galaxy/schema/help.py

@@ -27,14 +27,14 @@ class HelpForumPost(HelpTempBaseModel):
     """Model for a post in the help forum."""
 
     id: Annotated[int, Field(description="The ID of the post.")]
-    name: Annotated[str, Field(description="The name of the post.")]
-    username: Annotated[str, Field(description="The username of the post author.")]
-    avatar_template: Annotated[str, Field(description="The avatar template of the user.")]
-    created_at: Annotated[str, Field(description="The creation date of the post.")]
-    like_count: Annotated[int, Field(description="The number of likes of the post.")]
-    blurb: Annotated[str, Field(description="The blurb of the post.")]
-    post_number: Annotated[int, Field(description="The post number of the post.")]
-    topic_id: Annotated[int, Field(description="The ID of the topic of the post.")]
+    name: Annotated[Optional[str], Field(description="The name of the post.")]
+    username: Annotated[Optional[str], Field(description="The username of the post author.")]
+    avatar_template: Annotated[Optional[str], Field(description="The avatar template of the user.")]
+    created_at: Annotated[Optional[str], Field(description="The creation date of the post.")]
+    like_count: Annotated[Optional[int], Field(description="The number of likes of the post.")]
+    blurb: Annotated[Optional[str], Field(description="The blurb of the post.")]
+    post_number: Annotated[Optional[int], Field(description="The post number of the post.")]
+    topic_id: Annotated[Optional[int], Field(description="The ID of the topic of the post.")]
 
 
 class HelpForumTopic(Model):