Update wp-scripts and test with WordPress 6.7

[bobbingwide]

UK-tides blocks is currently delivered with one entry point /build/index.js.
wp-scripts has been improved considerably. It now supports multiple blocks per plugin.
UK tides doesn't need multiple blocks... but I may be moving the JavaScript source to another plugin that performs the build.
So I need to build it the same way as other blocks which do have multiple entry points.

Requirement

• Update uk-tides to benefit from improvements to wp-scripts from the @wordpress/scripts package
• Simplify / reduce the code needed to support internationalization
• Register the block so that only the required code is loaded for the blocks that are used.
• Understand what's needed to enqueue the required CSS in the block editor and on the front end.

Process

• Update wp-scripts using npm run packages-update
• Change webpack.config.js to deliver the UK-tides entry point.
• Change block.json file to refer to the appropriate entry-point and CSS
• Mark src/index.js as superceded
• Enable internationalisation
• Update server logic for the new entry point
  • Call wp_set_script_translations() for the block's editor-script
• Build using npm run dev
• Build the language files: npm run makepot, npm run l10n, npm run makejson
• Test

For plugins which have already been changed refer to the code changes in

• Update to the latest @wordpress/scripts package and rework as required sb-starting-block#3
• Update blocks to build using wp-scripts and register with block.json - starting with oik-bw/wp  oik-bob-bing-wide#42
• Update to the latest @wordpress/scripts package and rework as required oik#202

[bobbingwide]

Interestingly, since UK-tides only had one entry point, the build worked without having to create a webpack.config.js file.
But when I moved block.json from the plugin's root directory the build failed with the same messages I got for other plugins.

[email protected] dev
wp-scripts start

Skipping "./build/index.js" listed in "C:/apache/htdocs/wordpress/wp-content/plugins/uk-tides/src/oik-uk-tides/block.json". File does not exist in the "src" directory.
[webpack-cli] TypeError: Cannot convert undefined or null to object
at Function.keys ()
at getNormalizedEntryStatic (C:\apache\htdocs\wordpress\wp-content\plugins\uk-tides\node_modules\webpack\lib\config\normalization.js:491:27)
at process.processTicksAndRejections (node:internal/process/task_queues:95:5)

[bobbingwide]

wp-scripts is now v30.4.0. WordPress is now 6.7