Issue-236: Subquery block missing support for custom post titles

[mogmarsh]

Summary

Fixes #236 - Subquery block missing support for custom post titles.

Description of the bug

Adding a Subquery block does not include a post title in the block title. Initially, setting a custom post title was not available within a Subquery block.

Steps To Reproduce

1. Create a new Query block.
2. Add a nested Subquery block within the Post Template.
3. Core Post Title block is inserted.

Solution

Support for custom post titles within Subquery blocks has been added, allowing users to set custom titles for posts within these blocks.

Additional Information

When hardcoding the Custom Post Title block, it's possible to set a custom title. However, the value is set on the Query block and is used for any duplicate instance of the post within the Query.

Example code for creating Query with Subquery

<!-- wp:wp-curate/query {"postTypes":["post"],"posts":[null,null,null,null,null]} -->
<div class="wp-block-wp-curate-query"><!-- wp:post-template -->
<!-- wp:wp-curate/post -->
<div class="wp-block-wp-curate-post"><!-- wp:post-title {"isLink":true} /-->

<!-- wp:wp-curate/subquery {"numberOfPosts":2,"postTypes":[{"name":"Post","slug":"post"}],"posts":[null,null],"terms":{"category":[], "post_tag":[]},"uniqueId":"87552371-c7f9-4175-9105-d5ab61240864"} -->
<div class="wp-block-wp-curate-subquery"><!-- wp:post-template -->
<!-- wp:wp-curate/post -->
<div class="wp-block-wp-curate-post"><!-- wp:post-title {"level":3,"isLink":true} /--></div>
<!-- /wp:wp-curate/post -->
<!-- /wp:post-template --></div>
<!-- /wp:wp-curate/subquery --></div>
<!-- /wp:wp-curate/post -->
<!-- /wp:post-template --></div>
<!-- /wp:wp-curate/query -->

[efuller]

⚡

I manually tested this functionality and it does only work with pinned posts in the subquery block. The code for post-title does indicate that this is intentional.