Fix minor code smell in template part previews.

[Addison-Stavlo]

Description

I made a code smell months back, it was bugging me. There should be no change in functionality.

How has this been tested?

Test template part previews through the template part placeholder block or the dropdown in the template part block's toolbar. Verify the same templates appear.

Screenshots

Types of changes

Checklist:

• My code is tested.
• My code follows the WordPress code style.
• My code follows the accessibility standards.
• My code has proper inline documentation.
• I've included developer documentation if appropriate.
• I've updated all React Native files affected by any refactorings/renamings in this PR.

[github-actions]

Size Change: +707 B (0%)

Total Size: 1.19 MB

Filename	Size	Change
build/block-editor/index.js	133 kB	+345 B (0%)
build/block-editor/style-rtl.css	11.3 kB	+114 B (1%)
build/block-editor/style.css	11.2 kB	+111 B (0%)
build/block-library/index.js	147 kB	+17 B (0%)
build/blocks/index.js	48 kB	+7 B (0%)
build/components/index.js	171 kB	+91 B (0%)
build/components/style-rtl.css	15.3 kB	+23 B (0%)
build/components/style.css	15.3 kB	+24 B (0%)
build/edit-site/index.js	23.2 kB	-92 B (0%)
build/edit-site/style-rtl.css	3.98 kB	+24 B (0%)
build/edit-site/style.css	3.98 kB	+24 B (0%)
build/notices/index.js	1.79 kB	+19 B (1%)

ℹ️ View Unchanged

Filename	Size	Change
build/a11y/index.js	1.14 kB	0 B
build/annotations/index.js	3.77 kB	0 B
build/api-fetch/index.js	3.42 kB	0 B
build/autop/index.js	2.84 kB	0 B
build/blob/index.js	664 B	0 B
build/block-directory/index.js	8.71 kB	0 B
build/block-directory/style-rtl.css	943 B	0 B
build/block-directory/style.css	942 B	0 B
build/block-library/editor-rtl.css	8.91 kB	0 B
build/block-library/editor.css	8.91 kB	0 B
build/block-library/style-rtl.css	8.1 kB	0 B
build/block-library/style.css	8.1 kB	0 B
build/block-library/theme-rtl.css	792 B	0 B
build/block-library/theme.css	793 B	0 B
build/block-serialization-default-parser/index.js	1.87 kB	0 B
build/block-serialization-spec-parser/index.js	3.06 kB	0 B
build/compose/index.js	9.9 kB	0 B
build/core-data/index.js	14.8 kB	0 B
build/data-controls/index.js	821 B	0 B
build/data/index.js	8.74 kB	0 B
build/date/index.js	11.2 kB	0 B
build/deprecated/index.js	768 B	0 B
build/dom-ready/index.js	571 B	0 B
build/dom/index.js	4.92 kB	0 B
build/edit-navigation/index.js	11.1 kB	0 B
build/edit-navigation/style-rtl.css	881 B	0 B
build/edit-navigation/style.css	885 B	0 B
build/edit-post/index.js	306 kB	0 B
build/edit-post/style-rtl.css	6.43 kB	0 B
build/edit-post/style.css	6.42 kB	0 B
build/edit-widgets/index.js	26.3 kB	0 B
build/edit-widgets/style-rtl.css	3.16 kB	0 B
build/edit-widgets/style.css	3.16 kB	0 B
build/editor/editor-styles-rtl.css	476 B	0 B
build/editor/editor-styles.css	478 B	0 B
build/editor/index.js	42.5 kB	0 B
build/editor/style-rtl.css	3.85 kB	0 B
build/editor/style.css	3.85 kB	0 B
build/element/index.js	4.62 kB	0 B
build/escape-html/index.js	735 B	0 B
build/format-library/index.js	6.86 kB	0 B
build/format-library/style-rtl.css	547 B	0 B
build/format-library/style.css	548 B	0 B
build/hooks/index.js	2.16 kB	0 B
build/html-entities/index.js	623 B	0 B
build/i18n/index.js	3.57 kB	0 B
build/is-shallow-equal/index.js	713 B	0 B
build/keyboard-shortcuts/index.js	2.52 kB	0 B
build/keycodes/index.js	1.94 kB	0 B
build/list-reusable-blocks/index.js	3.1 kB	0 B
build/list-reusable-blocks/style-rtl.css	476 B	0 B
build/list-reusable-blocks/style.css	476 B	0 B
build/media-utils/index.js	5.32 kB	0 B
build/nux/index.js	3.4 kB	0 B
build/nux/style-rtl.css	671 B	0 B
build/nux/style.css	668 B	0 B
build/plugins/index.js	2.56 kB	0 B
build/primitives/index.js	1.43 kB	0 B
build/priority-queue/index.js	790 B	0 B
build/redux-routine/index.js	2.83 kB	0 B
build/reusable-blocks/index.js	3.05 kB	0 B
build/rich-text/index.js	13.3 kB	0 B
build/server-side-render/index.js	2.77 kB	0 B
build/shortcode/index.js	1.69 kB	0 B
build/token-list/index.js	1.27 kB	0 B
build/url/index.js	4.06 kB	0 B
build/viewport/index.js	1.84 kB	0 B
build/warning/index.js	1.14 kB	0 B
build/wordcount/index.js	1.22 kB	0 B

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[Copons]

Template previews show up as expected, but since we're fixing code smells, how about also updating the default export from TemplateParts to TemplatePartPreviews? 🙂

gutenberg/packages/block-library/src/template-part/edit/selection/template-part-previews.js

Line 202 in 1d21b92

export default function TemplateParts( {

---

Unrelated: I've noticed that if I select a part that is already used in the same template (e.g. template has header and footer, and I convert footer into header), all parts break. 🤔

[Addison-Stavlo]

Template previews show up as expected, but since we're fixing code smells, how about also updating the default export from TemplateParts to TemplatePartPreviews? 🙂

Good call. I didn't even notice that. Done ✅

I select a part that is already used in the same template (e.g. template has header and footer, and I convert footer into header), all parts break.

Yeah... some block sync issues - trying to be addressed in #24180 - Noah laid out a more detailed explanation in some comments around here #24180 (comment)

[Copons]

LGTM

I select a part that is already used in the same template (e.g. template has header and footer, and I convert footer into header), all parts break.

Yeah... some block sync issues - trying to be addressed in #24180 - Noah laid out a more detailed explanation in some comments around here #24180 (comment)

Nice! Great to know it is tracked and being worked on. ✨