Specific post tag stripped from posts when using wp export #130

Bug Report

• Yes, I reviewed the contribution guidelines.
• Yes, more specifically, I reviewed the guidelines on how to write clear bug reports.

Describe the current, buggy behavior

I have a post_tag with a name of 'featured' and a slug of 'featured-2'.
When running wp export --post__in="$(wp post list --tag="featured-2" --format=ids)" I get the correct output of posts as an XML file however, it doesn't have the 'featured' tag included with the posts. It is listed further up the file, as if it's expected to be used in the import, but this is the only time it appears.

If I export the posts using the WP Admin instead, the post_tag is correctly included with each post in the XML file output, and the output looks like this:
<category domain="post_tag" nicename="featured-2"><![CDATA[featured]]></category>
I understand the command is slightly different, as the UI doesn't provide a way to export tags, but it provide the desired output.

Describe how other contributors can replicate this bug

Create a post tag with a name of 'featured' and a slug of 'featured-2'.
Create a regular post with dummy title and content, and associated the 'featured' tag with it.
Publish the post.
Generate an export using this command: wp export --post__in="$(wp post list --tag="featured-2" --format=ids)"
Look at the resulting export XML file.
Do the same using WP Admin > Tools > Export and look at the resulting export XML file.

Describe what you would expect as the correct outcome

The XML file produced by the WP CLI wp export command should be the same as the one exported from the WP Admin.

Let us know what environment you are running this on

Shell:	/bin/zsh
PHP binary:	/Users/Jack/Library/Application Support/Local/lightning-services/php-8.1.29+0/bin/darwin-arm64/bin/php
PHP version:	8.1.29
php.ini used:	/Users/Jack/Library/Application Support/Local/run/p-d4viChN/conf/php/php.ini
MySQL binary:	/Users/Jack/Library/Application Support/Local/lightning-services/mysql-8.0.35+4/bin/darwin-arm64/bin/mysql
MySQL version:	mysql  Ver 8.0.35 for macos13 on arm64 (MySQL Community Server - GPL)
SQL modes:	
WP-CLI root dir:	phar://wp-cli.phar/vendor/wp-cli/wp-cli
WP-CLI vendor dir:	phar://wp-cli.phar/vendor
WP_CLI phar path:	phar:///Applications/Local.app/Contents/Resources/extraResources/bin/wp-cli/wp-cli.phar
WP-CLI packages dir:	
WP-CLI cache dir:	/Users/Jack/.wp-cli/cache
WP-CLI global config:	/Applications/Local.app/Contents/Resources/extraResources/bin/wp-cli/config.yaml
WP-CLI project config:	
WP-CLI version:	2.12.0